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 Code of Federal Regulations (Last Updated: November 8, 2024)
 Title 40 - Protection of Environment
 Chapter I - Environmental Protection Agency
 SubChapter C - Air Programs
 Part 81 - Designation of Areas for Air Quality Planning Purposes
 Subpart C - Section 107 Attainment Status Designations

  § 81.337 - Oklahoma.  

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  • § 81.337 Oklahoma.

    Oklahoma - TSP

    Designated area Does not meet primary standards Does not meet secondary standards Cannot be classified Better than national standards
    AQCR 017X
    AQCR 022X
    AQCR 184X
    AQCR 185X
    AQCR 186:
    Tulsa CountyX
    Portions of Muskogee CountyX
    Portions of Mayes CountyX
    Remainder of AQCRX
    AQCR 187X
    AQCR 188X
    AQCR 189:
    Portion of Comanche CountyX
    Remainder of AQCRX

    Oklahoma - 1971 Sulfur Dioxide NAAQS

    [Primary and Secondary]

    Designated area Does not meet primary standards Does not meet secondary standards Cannot be classified Better than national standards
    AQCR 017X
    AQCR 184X
    AQCR 185X
    AQCR 186X
    AQCR 187X
    AQCR 188X
    AQCR 189X

    Oklahoma - 2010 Sulfur Dioxide NAAQS

    [Primary]

    Designated area1 Designation
    Date2 Type
    Adair CountyAttainment/Unclassifiable.
    Alfalfa CountyAttainment/Unclassifiable.
    Atoka CountyAttainment/Unclassifiable.
    Beaver CountyAttainment/Unclassifiable.
    Beckham CountyAttainment/Unclassifiable.
    Blaine CountyAttainment/Unclassifiable.
    Bryan CountyAttainment/Unclassifiable.
    Caddo CountyAttainment/Unclassifiable.
    Canadian CountyAttainment/Unclassifiable.
    Carter CountyAttainment/Unclassifiable.
    Cherokee CountyAttainment/Unclassifiable.
    Choctaw County9/12/16Attainment/Unclassifiable.
    Cimarron CountyAttainment/Unclassifiable.
    Cleveland CountyAttainment/Unclassifiable.
    Coal CountyAttainment/Unclassifiable.
    Comanche CountyAttainment/Unclassifiable.
    Cotton CountyAttainment/Unclassifiable.
    Craig CountyAttainment/Unclassifiable.
    Creek CountyAttainment/Unclassifiable.
    Custer CountyAttainment/Unclassifiable.
    Delaware CountyAttainment/Unclassifiable.
    Dewey CountyAttainment/Unclassifiable.
    Ellis CountyAttainment/Unclassifiable.
    Garfield County4/30/2021Attainment/Unclassifiable.
    Garvin CountyAttainment/Unclassifiable.
    Grady CountyAttainment/Unclassifiable.
    Grant CountyAttainment/Unclassifiable.
    Greer CountyAttainment/Unclassifiable.
    Harmon CountyAttainment/Unclassifiable.
    Harper CountyAttainment/Unclassifiable.
    Haskell CountyAttainment/Unclassifiable.
    Hughes CountyAttainment/Unclassifiable.
    Jackson CountyAttainment/Unclassifiable.
    Jefferson CountyAttainment/Unclassifiable.
    Johnston CountyAttainment/Unclassifiable.
    Kay CountyAttainment/Unclassifiable.
    Kingfisher CountyAttainment/Unclassifiable.
    Kiowa CountyAttainment/Unclassifiable.
    Latimer CountyAttainment/Unclassifiable.
    Le Flore CountyAttainment/Unclassifiable.
    Lincoln CountyAttainment/Unclassifiable.
    Logan CountyAttainment/Unclassifiable.
    Love CountyAttainment/Unclassifiable.
    McClain CountyAttainment/Unclassifiable.
    McCurtain CountyAttainment/Unclassifiable.
    McIntosh CountyAttainment/Unclassifiable.
    Major CountyAttainment/Unclassifiable.
    Marshall CountyAttainment/Unclassifiable.
    Mayes County4/30/2021Attainment/Unclassifiable.
    Murray CountyAttainment/Unclassifiable.
    Muskogee County4/30/2021Attainment/Unclassifiable.
    Noble County9/12/16Attainment/Unclassifiable.
    Nowata CountyAttainment/Unclassifiable.
    Okfuskee CountyAttainment/Unclassifiable.
    Oklahoma CountyAttainment/Unclassifiable.
    Okmulgee CountyAttainment/Unclassifiable.
    Osage CountyAttainment/Unclassifiable.
    Ottawa CountyAttainment/Unclassifiable.
    Pawnee CountyAttainment/Unclassifiable.
    Payne CountyAttainment/Unclassifiable.
    Pittsburg CountyAttainment/Unclassifiable.
    Pontotoc CountyAttainment/Unclassifiable.
    Pottawatomie CountyAttainment/Unclassifiable.
    Pushmataha CountyAttainment/Unclassifiable.
    Roger Mills CountyAttainment/Unclassifiable.
    Rogers CountyAttainment/Unclassifiable.
    Seminole CountyAttainment/Unclassifiable.
    Sequoyah CountyAttainment/Unclassifiable.
    Stephens CountyAttainment/Unclassifiable.
    Texas CountyAttainment/Unclassifiable.
    Tillman CountyAttainment/Unclassifiable.
    Tulsa CountyAttainment/Unclassifiable.
    Wagoner CountyAttainment/Unclassifiable.
    Washington CountyAttainment/Unclassifiable.
    Washita CountyAttainment/Unclassifiable.
    Woods CountyAttainment/Unclassifiable.
    Woodward CountyAttainment/Unclassifiable.

    1 Includes any Indian country in each county or area, unless otherwise specified. EPA is not determining the boundaries of any area of Indian country in this table, including any area of Indian country located in the larger designation area. The inclusion of any Indian country in the designation area is not a determination that the state has regulatory authority under the Clean Air Act for such Indian country.

    2 This date is April 9, 2018, unless otherwise noted.

    Oklahoma - Carbon Monoxide

    Designated Area Designation Classification
    Date1 Type Date1 Type
    AQCR 017 Metropolitan Fort Smith InterstateUnclassifiable/Attainment
    Adair County
    Cherokee County
    Le Flore County
    Sequoyah County
    AQCR 022 Shreveport-Texarkana-Tyler InterstateUnclassifiable/Attainment
    McCurtain County
    AQCR 184 Central Oklahoma IntrastateUnclassifiable/Attainment
    Canadian County
    Cleveland County
    Grady County
    Kingfisher County
    Lincoln County
    Logan County
    McClain County
    Oklahoma County
    Pottawatomie County
    AQCR 185 North Central Oklahoma IntrastateUnclassifiable/Attainment
    Garfield County
    Grant County
    Kay County
    Noble County
    Payne County
    AQCR 186 Northeastern Oklahoma IntrastateUnclassifiable/Attainment
    Craig County
    Creek County
    Delaware County
    Mayes County
    Muskogee County
    Nowata County
    Okmulgee County
    Osage County
    Ottawa County
    Pawnee County
    Rogers County
    Tulsa County
    Wagoner County
    Washington County
    AQCR 187 Northwestern Oklahoma IntrastateUnclassifiable/Attainment
    Alfalfa County
    Beaver County
    Blaine County
    Cimarron County
    Custer County
    Dewey County
    Ellis County
    Harper County
    Major County
    Roger Mills County
    Texas County
    Woods County
    Woodward County
    AQCR 188 Southeastern Oklahoma IntrastateUnclassifiable/Attainment
    Atoka County
    Bryan County
    Carter County
    Choctaw County
    Coal County
    Garvin County
    Haskell County
    Hughes County
    Johnston County
    Latimer County
    Love County
    Marshall County
    McIntosh County
    Murray County
    Okfuskee County
    Pittsburg County
    Pontotoc County
    Pushmataha County
    Seminole County
    AQCR 189 Southwestern Oklahoma IntrastateUnclassifiable/Attainment
    Beckham County
    Caddo County
    Comanche County
    Cotton County
    Greer County
    Harmon County
    Jackson County
    Jefferson County
    Kiowa County
    Stephens County
    Tillman County
    Washita County

    1 This date is November 15, 1990, unless otherwise noted.

    Oklahoma - Ozone (1-Hour Standard)2

    Designated area Designation Classification
    Date1 Type Date1 Type
    AQCR 017 Metropolitan Fort Smith InterstateUnclassifiable/Attainment
    Adair County
    Cherokee County
    Le Flore County
    Sequoyah County
    AQCR 022 Shreveport-Texarkana-Tyler IntrastateUnclassifiable/Attainment
    McCurtain County
    AQCR 184 Central Oklahoma Intrastate (part)
    Cleveland CountyUnclassifiable/Attainment
    Oklahoma CountyUnclassifiable/Attainment
    AQCR 184 Central Oklahoma Intrastate (Remainder of)Unclassifiable/Attainment
    Canadian County
    Grady County
    Kingfisher County
    Lincoln County
    Logan County
    McClain County
    Pottawatomie County
    AQCR 185 North Central Oklahoma IntrastateUnclassifiable/Attainment
    Garfield County
    Grant County
    Kay County
    Noble County
    Payne County
    AQCR 186 Northeastern Oklahoma IntrastateUnclassifiable/Attainment
    Craig County
    Creek County
    Delaware County
    Mayes County
    Muskogee County
    Nowata County
    Okmulgee County
    Osage County
    Ottawa County
    Pawnee County
    Rogers County
    Tulsa County
    Wagoner County
    Washington County
    AQCR 187 Northwestern Oklahoma IntrastateUnclassifiable/Attainment
    Alfalfa County
    Beaver County
    Blaine County
    Cimarron County
    Custer County
    Dewey County
    Ellis County
    Harper County
    Major County
    Roger Mills County
    Texas County
    Woods County
    Woodward County
    AQCR 188 Southeastern Oklahoma IntrastateUnclassifiable/Attainment
    Atoka County
    Bryan County
    Carter County
    Choctaw County
    Coal County
    Garvin County
    Haskell County
    Hughes County
    Johnston County
    Latimer County
    Love County
    Marshall County
    McIntosh County
    Murray County
    Okfuskee County
    Pittsburg County
    Pontotoc County
    Pushmataha County
    Seminole County
    AQCR 189 Southwestern Oklahoma IntrastateUnclassifiable/Attainment
    Beckham County
    Caddo County
    Comanche County
    Cotton County
    Greer County
    Harmon County
    Jackson County
    Jefferson County
    Kiowa County
    Stephens County
    Tillman County
    Washita County

    1 This date is October 18, 2000, unless otherwise noted.

    2 The 1-hour ozone standard is revoked effective June 15, 2005 for all areas in Oklahoma.

    Oklahoma - 1997 Annual PM2.5 NAAQS

    [Primary and Secondary]

    Designated area Designationa Classification
    Date1 Type Date Type
    AQCR 017 Metropolitan Fort Smith Interstate:
    Adair CountyUnclassifiable/Attainment
    Cherokee CountyUnclassifiable/Attainment
    Le Flore CountyUnclassifiable/Attainment
    Sequoyah CountyUnclassifiable/Attainment
    AQCR 022 Shreveport-Texarkana-Tyler Intrastate:
    McCurtain CountyUnclassifiable/Attainment
    AQCR 184 Central Oklahoma Intrastate (part):
    Cleveland CountyUnclassifiable/Attainment
    Oklahoma CountyUnclassifiable/Attainment
    AQCR 184 Central Oklahoma Intrastate (remainder of):
    Canadian CountyUnclassifiable/Attainment
    Grady CountyUnclassifiable/Attainment
    Kingfisher CountyUnclassifiable/Attainment
    Lincoln CountyUnclassifiable/Attainment
    Logan CountyUnclassifiable/Attainment
    McClain CountyUnclassifiable/Attainment
    Pottawatomie CountyUnclassifiable/Attainment
    AQCR 185 North Central Oklahoma Intrastate:
    Garfield CountyUnclassifiable/Attainment
    Grant CountyUnclassifiable/Attainment
    Kay CountyUnclassifiable/Attainment
    Noble CountyUnclassifiable/Attainment
    Payne CountyUnclassifiable/Attainment
    AQCR 186 Northeastern Oklahoma Intrastate:
    Craig CountyUnclassifiable/Attainment
    Creek CountyUnclassifiable/Attainment
    Delaware CountyUnclassifiable/Attainment
    Mayes CountyUnclassifiable/Attainment
    Muskogee CountyUnclassifiable/Attainment
    Nowata CountyUnclassifiable/Attainment
    Okmulgee CountyUnclassifiable/Attainment
    Osage CountyUnclassifiable/Attainment
    Ottawa CountyUnclassifiable/Attainment
    Pawnee CountyUnclassifiable/Attainment
    Rogers CountyUnclassifiable/Attainment
    Tulsa CountyUnclassifiable/Attainment
    Wagoner CountyUnclassifiable/Attainment
    Washington CountyUnclassifiable/Attainment
    AQCR 187 Northwestern Oklahoma Intrastate:
    Alfalfa CountyUnclassifiable/Attainment
    Beaver CountyUnclassifiable/Attainment
    Blaine CountyUnclassifiable/Attainment
    Cimarron CountyUnclassifiable/Attainment
    Custer CountyUnclassifiable/Attainment
    Dewey CountyUnclassifiable/Attainment
    Ellis CountyUnclassifiable/Attainment
    Harper CountyUnclassifiable/Attainment
    Major CountyUnclassifiable/Attainment
    Roger Mills CountyUnclassifiable/Attainment
    Texas CountyUnclassifiable/Attainment
    Woods CountyUnclassifiable/Attainment
    Woodward CountyUnclassifiable/Attainment
    AQCR 188 Southeastern Oklahoma Intrastate:
    Atoka CountyUnclassifiable/Attainment
    Bryan CountyUnclassifiable/Attainment
    Carter CountyUnclassifiable/Attainment
    Choctaw CountyUnclassifiable/Attainment
    Coal CountyUnclassifiable/Attainment
    Garvin CountyUnclassifiable/Attainment
    Haskell CountyUnclassifiable/Attainment
    Hughes CountyUnclassifiable/Attainment
    Johnston CountyUnclassifiable/Attainment
    Latimer CountyUnclassifiable/Attainment
    Love CountyUnclassifiable/Attainment
    McIntosh CountyUnclassifiable/Attainment
    Marshall CountyUnclassifiable/Attainment
    Murray CountyUnclassifiable/Attainment
    Okfuskee CountyUnclassifiable/Attainment
    Pittsburg CountyUnclassifiable/Attainment
    Pontotoc CountyUnclassifiable/Attainment
    Pushmataha CountyUnclassifiable/Attainment
    Seminole CountyUnclassifiable/Attainment
    AQCR 189 Southwestern Oklahoma Intrastate:
    Beckham CountyUnclassifiable/Attainment
    Caddo CountyUnclassifiable/Attainment
    Comanche CountyUnclassifiable/Attainment
    Cotton CountyUnclassifiable/Attainment
    Greer CountyUnclassifiable/Attainment
    Harmon CountyUnclassifiable/Attainment
    Jackson CountyUnclassifiable/Attainment
    Jefferson CountyUnclassifiable/Attainment
    Kiowa CountyUnclassifiable/Attainment
    Stephens CountyUnclassifiable/Attainment
    Tillman CountyUnclassifiable/Attainment
    Washita CountyUnclassifiable/Attainment

    a Includes Indian Country located in each county or area, except as otherwise specified.

    1 This date is 90 days after January 5, 2005, unless otherwise noted.

    Oklahoma - 2012 Annual PM2.5 NAAQS

    [Primary]

    Designated area1 Designation Classification
    Date2 Type Date2 Type
    AQCR 017 Metropolitan Fort Smith Interstate:
    Adair CountyUnclassifiable/Attainment
    Cherokee CountyUnclassifiable/Attainment
    Le Flore CountyUnclassifiable/Attainment
    Sequoyah CountyUnclassifiable/Attainment
    AQCR 022 Shreveport-Texarkana-Tyler Intrastate:
    McCurtain CountyUnclassifiable/Attainment
    AQCR 184 Central Oklahoma Intrastate:
    Canadian CountyUnclassifiable/Attainment
    Cleveland CountyUnclassifiable/Attainment
    Grady CountyUnclassifiable/Attainment
    Kingfisher CountyUnclassifiable/Attainment
    Lincoln CountyUnclassifiable/Attainment
    Logan CountyUnclassifiable/Attainment
    McClain CountyUnclassifiable/Attainment
    Oklahoma CountyUnclassifiable/Attainment
    Pottawatomie CountyUnclassifiable/Attainment
    AQCR 185 North Central Oklahoma Intrastate:
    Garfield CountyUnclassifiable/Attainment
    Grant CountyUnclassifiable/Attainment
    Kay CountyUnclassifiable/Attainment
    Noble CountyUnclassifiable/Attainment
    Payne CountyUnclassifiable/Attainment
    AQCR 186 Northeastern Oklahoma Intrastate:
    Craig CountyUnclassifiable/Attainment
    Creek CountyUnclassifiable/Attainment
    Delaware CountyUnclassifiable/Attainment
    Mayes CountyUnclassifiable/Attainment
    Muskogee CountyUnclassifiable/Attainment
    Nowata CountyUnclassifiable/Attainment
    Okmulgee CountyUnclassifiable/Attainment
    Osage CountyUnclassifiable/Attainment
    Ottawa CountyUnclassifiable/Attainment
    Pawnee CountyUnclassifiable/Attainment
    Rogers CountyUnclassifiable/Attainment
    Tulsa CountyUnclassifiable/Attainment
    Wagoner CountyUnclassifiable/Attainment
    Washington CountyUnclassifiable/Attainment
    AQCR 187 Northwestern Oklahoma Intrastate:
    Alfalfa CountyUnclassifiable/Attainment
    Beaver CountyUnclassifiable/Attainment
    Blaine CountyUnclassifiable/Attainment
    Cimarron CountyUnclassifiable/Attainment
    Custer CountyUnclassifiable/Attainment
    Dewey CountyUnclassifiable/Attainment
    Ellis CountyUnclassifiable/Attainment
    Harper CountyUnclassifiable/Attainment
    Major CountyUnclassifiable/Attainment
    Roger Mills CountyUnclassifiable/Attainment
    Texas CountyUnclassifiable/Attainment
    Woods CountyUnclassifiable/Attainment
    Woodward CountyUnclassifiable/Attainment
    AQCR 188 Southeastern Oklahoma Intrastate:
    Atoka CountyUnclassifiable/Attainment
    Bryan CountyUnclassifiable/Attainment
    Carter CountyUnclassifiable/Attainment
    Choctaw CountyUnclassifiable/Attainment
    Coal CountyUnclassifiable/Attainment
    Garvin CountyUnclassifiable/Attainment
    Haskell CountyUnclassifiable/Attainment
    Hughes CountyUnclassifiable/Attainment
    Johnston CountyUnclassifiable/Attainment
    Latimer CountyUnclassifiable/Attainment
    Love CountyUnclassifiable/Attainment
    McIntosh CountyUnclassifiable/Attainment
    Marshall CountyUnclassifiable/Attainment
    Murray CountyUnclassifiable/Attainment
    Okfuskee CountyUnclassifiable/Attainment
    Pittsburg CountyUnclassifiable/Attainment
    Pontotoc CountyUnclassifiable/Attainment
    Pushmataha CountyUnclassifiable/Attainment
    Seminole CountyUnclassifiable/Attainment
    AQCR 189 Southwestern Oklahoma Intrastate:
    Beckham CountyUnclassifiable/Attainment
    Caddo CountyUnclassifiable/Attainment
    Comanche CountyUnclassifiable/Attainment
    Cotton CountyUnclassifiable/Attainment
    Greer CountyUnclassifiable/Attainment
    Harmon CountyUnclassifiable/Attainment
    Jackson CountyUnclassifiable/Attainment
    Jefferson CountyUnclassifiable/Attainment
    Kiowa CountyUnclassifiable/Attainment
    Stephens CountyUnclassifiable/Attainment
    Tillman CountyUnclassifiable/Attainment
    Washita CountyUnclassifiable/Attainment

    1 Includes areas of Indian country located in each county or area, except as otherwise specified.

    2 This date is April 15, 2015, unless otherwise noted.

    Oklahoma - 1997 24-Hour PM2.5 NAAQS

    [Primary and Secondary]

    Designated area Designationa Classification
    Date1 Type Date Type
    AQCR 017 Metropolitan Fort Smith Interstate:
    Adair CountyUnclassifiable/Attainment.
    Cherokee CountyUnclassifiable/Attainment.
    Le Flore CountyUnclassifiable/Attainment.
    Sequoyah CountyUnclassifiable/Attainment.
    AQCR 022 Shreveport-Texarkana-Tyler Intrastate:
    McCurtain CountyUnclassifiable/Attainment.
    AQCR 184 Central Oklahoma Intrastate:
    Canadian CountyUnclassifiable/Attainment.
    Cleveland CountyUnclassifiable/Attainment.
    Grady CountyUnclassifiable/Attainment.
    Kingfisher CountyUnclassifiable/Attainment.
    Lincoln CountyUnclassifiable/Attainment.
    Logan CountyUnclassifiable/Attainment.
    McClain CountyUnclassifiable/Attainment.
    Oklahoma CountyUnclassifiable/Attainment.
    Pottawatomie CountyUnclassifiable/Attainment.
    AQCR 185 North Central Oklahoma Intrastate:
    Garfield CountyUnclassifiable/Attainment.
    Grant CountyUnclassifiable/Attainment.
    Kay CountyUnclassifiable/Attainment.
    Noble CountyUnclassifiable/Attainment.
    Payne CountyUnclassifiable/Attainment.
    AQCR 186 Northeastern Oklahoma Intrastate:
    Craig CountyUnclassifiable/Attainment.
    Creek CountyUnclassifiable/Attainment.
    Delaware CountyUnclassifiable/Attainment.
    Mayes CountyUnclassifiable/Attainment.
    Muskogee CountyUnclassifiable/Attainment.
    Nowata CountyUnclassifiable/Attainment.
    Okmulgee CountyUnclassifiable/Attainment.
    Osage CountyUnclassifiable/Attainment.
    Ottawa CountyUnclassifiable/Attainment.
    Pawnee CountyUnclassifiable/Attainment.
    Rogers CountyUnclassifiable/Attainment.
    Tulsa CountyUnclassifiable/Attainment.
    Wagoner CountyUnclassifiable/Attainment.
    Washington CountyUnclassifiable/Attainment.
    AQCR 187 Northwestern Oklahoma Intrastate:
    Alfalfa CountyUnclassifiable/Attainment.
    Beaver CountyUnclassifiable/Attainment.
    Blaine CountyUnclassifiable/Attainment.
    Cimarron CountyUnclassifiable/Attainment.
    Custer CountyUnclassifiable/Attainment.
    Dewey CountyUnclassifiable/Attainment.
    Ellis CountyUnclassifiable/Attainment.
    Harper CountyUnclassifiable/Attainment.
    Major CountyUnclassifiable/Attainment.
    Roger Mills CountyUnclassifiable/Attainment.
    Texas CountyUnclassifiable/Attainment.
    Woods CountyUnclassifiable/Attainment.
    Woodward CountyUnclassifiable/Attainment.
    AQCR 188 Southeastern Oklahoma Intrastate:
    Atoka CountyUnclassifiable/Attainment.
    Bryan CountyUnclassifiable/Attainment.
    Carter CountyUnclassifiable/Attainment.
    Choctaw CountyUnclassifiable/Attainment.
    Coal CountyUnclassifiable/Attainment.
    Garvin CountyUnclassifiable/Attainment.
    Haskell CountyUnclassifiable/Attainment.
    Hughes CountyUnclassifiable/Attainment.
    Johnston CountyUnclassifiable/Attainment.
    Latimer CountyUnclassifiable/Attainment.
    Love CountyUnclassifiable/Attainment.
    McIntosh CountyUnclassifiable/Attainment.
    Marshall CountyUnclassifiable/Attainment.
    Murray CountyUnclassifiable/Attainment.
    Okfuskee CountyUnclassifiable/Attainment.
    Pittsburg CountyUnclassifiable/Attainment.
    Pontotoc CountyUnclassifiable/Attainment.
    Pushmataha CountyUnclassifiable/Attainment.
    Seminole CountyUnclassifiable/Attainment.
    AQCR 189 Southwestern Oklahoma Intrastate:
    Beckham CountyUnclassifiable/Attainment.
    Caddo CountyUnclassifiable/Attainment.
    Comanche CountyUnclassifiable/Attainment.
    Cotton CountyUnclassifiable/Attainment.
    Greer CountyUnclassifiable/Attainment.
    Harmon CountyUnclassifiable/Attainment.
    Jackson CountyUnclassifiable/Attainment.
    Jefferson CountyUnclassifiable/Attainment.
    Kiowa CountyUnclassifiable/Attainment.
    Stephens CountyUnclassifiable/Attainment.
    Tillman CountyUnclassifiable/Attainment.
    Washita CountyUnclassifiable/Attainment.

    a Includes Indian Country located in each county or area, except as otherwise specified.

    1 This date is 90 days after January 5, 2005, unless otherwise noted.

    Oklahoma - 2006 24-Hour PM2.5 NAAQS

    [Primary and Secondary]

    Designated area Designationa Classification
    Date1 Type Date Type
    AQCR 017 Metropolitan Fort Smith Interstate:
    Adair CountyUnclassifiable/Attainment.
    Cherokee CountyUnclassifiable/Attainment.
    Le Flore CountyUnclassifiable/Attainment.
    Sequoyah CountyUnclassifiable/Attainment.
    AQCR 022 Shreveport-Texarkana-Tyler Intrastate:
    McCurtain CountyUnclassifiable/Attainment.
    AQCR 184 Central Oklahoma Intrastate:
    Canadian CountyUnclassifiable/Attainment.
    Cleveland CountyUnclassifiable/Attainment.
    Grady CountyUnclassifiable/Attainment.
    Kingfisher CountyUnclassifiable/Attainment.
    Lincoln CountyUnclassifiable/Attainment.
    Logan CountyUnclassifiable/Attainment.
    McClain CountyUnclassifiable/Attainment.
    Oklahoma CountyUnclassifiable/Attainment.
    Pottawatomie CountyUnclassifiable/Attainment.
    AQCR 185 North Central Oklahoma Intrastate:
    Garfield CountyUnclassifiable/Attainment.
    Grant CountyUnclassifiable/Attainment.
    Kay CountyUnclassifiable/Attainment.
    Noble CountyUnclassifiable/Attainment.
    Payne CountyUnclassifiable/Attainment.
    AQCR 186 Northeastern Oklahoma Intrastate:
    Craig CountyUnclassifiable/Attainment.
    Creek CountyUnclassifiable/Attainment.
    Delaware CountyUnclassifiable/Attainment.
    Mayes CountyUnclassifiable/Attainment.
    Muskogee CountyUnclassifiable/Attainment.
    Nowata CountyUnclassifiable/Attainment.
    Okmulgee CountyUnclassifiable/Attainment.
    Osage CountyUnclassifiable/Attainment.
    Ottawa CountyUnclassifiable/Attainment.
    Pawnee CountyUnclassifiable/Attainment.
    Rogers CountyUnclassifiable/Attainment.
    Tulsa CountyUnclassifiable/Attainment.
    Wagoner CountyUnclassifiable/Attainment.
    Washington CountyUnclassifiable/Attainment.
    AQCR 187 Northwestern Oklahoma Intrastate:
    Alfalfa CountyUnclassifiable/Attainment.
    Beaver CountyUnclassifiable/Attainment.
    Blaine CountyUnclassifiable/Attainment.
    Cimarron CountyUnclassifiable/Attainment.
    Custer CountyUnclassifiable/Attainment.
    Dewey CountyUnclassifiable/Attainment.
    Ellis CountyUnclassifiable/Attainment.
    Harper CountyUnclassifiable/Attainment.
    Major CountyUnclassifiable/Attainment.
    Roger Mills CountyUnclassifiable/Attainment.
    Texas CountyUnclassifiable/Attainment.
    Woods CountyUnclassifiable/Attainment.
    Woodward CountyUnclassifiable/Attainment.
    AQCR 188 Southeastern Oklahoma Intrastate:
    Atoka CountyUnclassifiable/Attainment.
    Bryan CountyUnclassifiable/Attainment.
    Carter CountyUnclassifiable/Attainment.
    Choctaw CountyUnclassifiable/Attainment.
    Coal CountyUnclassifiable/Attainment.
    Garvin CountyUnclassifiable/Attainment.
    Haskell CountyUnclassifiable/Attainment.
    Hughes CountyUnclassifiable/Attainment.
    Johnston CountyUnclassifiable/Attainment.
    Latimer CountyUnclassifiable/Attainment.
    Love CountyUnclassifiable/Attainment.
    McIntosh CountyUnclassifiable/Attainment.
    Marshall CountyUnclassifiable/Attainment.
    Murray CountyUnclassifiable/Attainment.
    Okfuskee CountyUnclassifiable/Attainment.
    Pittsburg CountyUnclassifiable/Attainment.
    Pontotoc CountyUnclassifiable/Attainment.
    Pushmataha CountyUnclassifiable/Attainment.
    Seminole CountyUnclassifiable/Attainment.
    AQCR 189 Southwestern Oklahoma Intrastate:
    Beckham CountyUnclassifiable/Attainment.
    Caddo CountyUnclassifiable/Attainment.
    Comanche CountyUnclassifiable/Attainment.
    Cotton CountyUnclassifiable/Attainment.
    Greer CountyUnclassifiable/Attainment.
    Harmon CountyUnclassifiable/Attainment.
    Jackson CountyUnclassifiable/Attainment.
    Jefferson CountyUnclassifiable/Attainment.
    Kiowa CountyUnclassifiable/Attainment.
    Stephens CountyUnclassifiable/Attainment.
    Tillman CountyUnclassifiable/Attainment.
    Washita CountyUnclassifiable/Attainment.

    a Includes Indian Country located in each county or area, except as otherwise specified.

    1 This date is 30 days after November 13, 2009, unless otherwise noted.

    Oklahoma - NO2 (1971 Annual Standard)

    Designated area Does not meet primary standards Cannot be classified or better than national standards
    AQCR 017X
    AQCR 184X
    AQCR 185X
    AQCR 186X
    AQCR 187X
    AQCR 188X
    AQCR 189X

    Oklahoma - NO2 (2010 1-Hour Standard)

    Designated area Designationa
    Date1 Type
    Adair CountyUnclassifiable/Attainment.
    Alfalfa CountyUnclassifiable/Attainment.
    Atoka CountyUnclassifiable/Attainment.
    Beaver CountyUnclassifiable/Attainment.
    Beckham CountyUnclassifiable/Attainment.
    Blaine CountyUnclassifiable/Attainment.
    Bryan CountyUnclassifiable/Attainment.
    Caddo CountyUnclassifiable/Attainment.
    Canadian CountyUnclassifiable/Attainment.
    Carter CountyUnclassifiable/Attainment.
    Cherokee CountyUnclassifiable/Attainment.
    Choctaw CountyUnclassifiable/Attainment.
    Cimarron CountyUnclassifiable/Attainment.
    Cleveland CountyUnclassifiable/Attainment.
    Coal CountyUnclassifiable/Attainment.
    Comanche CountyUnclassifiable/Attainment.
    Cotton CountyUnclassifiable/Attainment.
    Craig CountyUnclassifiable/Attainment.
    Creek CountyUnclassifiable/Attainment.
    Custer CountyUnclassifiable/Attainment.
    Delaware CountyUnclassifiable/Attainment.
    Dewey CountyUnclassifiable/Attainment.
    Ellis CountyUnclassifiable/Attainment.
    Garfield CountyUnclassifiable/Attainment.
    Garvin CountyUnclassifiable/Attainment.
    Grady CountyUnclassifiable/Attainment.
    Grant CountyUnclassifiable/Attainment.
    Greer CountyUnclassifiable/Attainment.
    Harmon CountyUnclassifiable/Attainment.
    Harper CountyUnclassifiable/Attainment.
    Haskell CountyUnclassifiable/Attainment.
    Hughes CountyUnclassifiable/Attainment.
    Jackson CountyUnclassifiable/Attainment.
    Jefferson CountyUnclassifiable/Attainment.
    Johnston CountyUnclassifiable/Attainment.
    Kay CountyUnclassifiable/Attainment.
    Kingfisher CountyUnclassifiable/Attainment.
    Kiowa CountyUnclassifiable/Attainment.
    Latimer CountyUnclassifiable/Attainment.
    Le Flore CountyUnclassifiable/Attainment.
    Lincoln CountyUnclassifiable/Attainment.
    Logan CountyUnclassifiable/Attainment.
    Love CountyUnclassifiable/Attainment.
    Major CountyUnclassifiable/Attainment.
    Marshall CountyUnclassifiable/Attainment.
    Mayes CountyUnclassifiable/Attainment.
    McClain CountyUnclassifiable/Attainment.
    McCurtain CountyUnclassifiable/Attainment.
    McIntosh CountyUnclassifiable/Attainment.
    Murray CountyUnclassifiable/Attainment.
    Muskogee CountyUnclassifiable/Attainment.
    Noble CountyUnclassifiable/Attainment.
    Nowata CountyUnclassifiable/Attainment.
    Okfuskee CountyUnclassifiable/Attainment.
    Oklahoma CountyUnclassifiable/Attainment.
    Okmulgee CountyUnclassifiable/Attainment.
    Osage CountyUnclassifiable/Attainment.
    Ottawa CountyUnclassifiable/Attainment.
    Pawnee CountyUnclassifiable/Attainment.
    Payne CountyUnclassifiable/Attainment.
    Pittsburg CountyUnclassifiable/Attainment.
    Pontotoc CountyUnclassifiable/Attainment.
    Pottawatomie CountyUnclassifiable/Attainment.
    Pushmataha CountyUnclassifiable/Attainment.
    Roger Mills CountyUnclassifiable/Attainment.
    Rogers CountyUnclassifiable/Attainment.
    Seminole CountyUnclassifiable/Attainment.
    Sequoyah CountyUnclassifiable/Attainment.
    Stephens CountyUnclassifiable/Attainment.
    Texas CountyUnclassifiable/Attainment.
    Tillman CountyUnclassifiable/Attainment.
    Tulsa CountyUnclassifiable/Attainment.
    Wagoner CountyUnclassifiable/Attainment.
    Washington CountyUnclassifiable/Attainment.
    Washita CountyUnclassifiable/Attainment.
    Woods CountyUnclassifiable/Attainment.
    Woodward CountyUnclassifiable/Attainment.

    a Includes Indian Country located in each county or area, except as otherwise specified.

    1 This date is 90 days after October 31, 2011, unless otherwise noted.

    Oklahoma - 1997 8-Hour Ozone NAAQS

    [Primary and Secondary]

    Designated area Designationa Category/classification
    Date1 Type Date1 Type
    AQCR 017 Metropolitan Fort Smith InterstateUnclassifiable/Attainment
    Adair County
    Cherokee County
    Le Flore County
    Sequoyah County
    AQCR 022 Shreveport-Texarkana-Tyler Intrastate: McCurtain CountyUnclassifiable/Attainment
    AQCR 184 Central Oklahoma Intrastate (part):
    Cleveland CountyUnclassifiable/Attainment
    Oklahoma CountyUnclassifiable/Attainment
    AQCR 184 Central Oklahoma Intrastate (remainder of)Unclassifiable/Attainment
    Canadian County
    Grady County
    Kingfisher County
    Lincoln County
    Logan County
    McClain County
    Pottawatomie County
    AQCR 185 North Central Oklahoma IntrastateUnclassifiable/Attainment
    Garfield County
    Grant County
    Kay County
    Noble County
    Payne County
    AQCR 186 Northeastern Oklahoma IntrastateUnclassifiable/Attainment
    Craig County
    Creek County
    Delaware County
    Mayes County
    Muskogee County
    Nowata County
    Okmulgee County
    Osage County
    Ottawa County
    Pawnee County
    Rogers County
    Tulsa County
    Wagoner County
    Washington County
    AQCR 187 Northwestern Oklahoma IntrastateUnclassifiable/Attainment
    Alfalfa County
    Beaver County
    Blaine County
    Cimarron County
    Custer County
    Dewey County
    Ellis County
    Harper County
    Major County
    Roger Mills County
    Texas County
    Woods County
    Woodward County
    AQCR 188 Southeastern Oklahoma IntrastateUnclassifiable/Attainment
    Atoka County
    Bryan County
    Carter County
    Choctaw County
    Coal County
    Garvin County
    Haskell County
    Hughes County
    Johnston County
    Latimer County
    Love County
    Marshall County
    McIntosh County
    Murray County
    Okfuskee County
    Pittsburg County
    Pontotoc County
    Pushmataha County
    Seminole County
    AQCR 189 Southwestern Oklahoma IntrastateUnclassifiable/Attainment
    Beckham County
    Caddo County
    Comanche County
    Cotton County
    Greer County
    Harmon County
    Jackson County
    Jefferson County
    Kiowa County
    Stephens County
    Tillman County
    Washita County

    a Includes Indian Country located in each county or area, except as otherwise specified.

    1 This date is June 15, 2004, unless otherwise noted.

    Oklahoma - 2008 8-Hour Ozone NAAQS

    [Primary and Secondary]

    Designated area1 Designation Classification
    Date2 Type Date2 Type
    Adair CountyUnclassifiable/Attainment
    Alfalfa CountyUnclassifiable/Attainment
    Atoka CountyUnclassifiable/Attainment
    Beaver CountyUnclassifiable/Attainment
    Beckham CountyUnclassifiable/Attainment
    Blaine CountyUnclassifiable/Attainment
    Bryan CountyUnclassifiable/Attainment
    Caddo CountyUnclassifiable/Attainment
    Canadian CountyUnclassifiable/Attainment
    Carter CountyUnclassifiable/Attainment
    Cherokee CountyUnclassifiable/Attainment
    Choctaw CountyUnclassifiable/Attainment
    Cimarron CountyUnclassifiable/Attainment
    Cleveland CountyUnclassifiable/Attainment
    Coal CountyUnclassifiable/Attainment
    Comanche CountyUnclassifiable/Attainment
    Cotton CountyUnclassifiable/Attainment
    Craig CountyUnclassifiable/Attainment
    Creek CountyUnclassifiable/Attainment
    Custer CountyUnclassifiable/Attainment
    Delaware CountyUnclassifiable/Attainment
    Dewey CountyUnclassifiable/Attainment
    Ellis CountyUnclassifiable/Attainment
    Garfield CountyUnclassifiable/Attainment
    Garvin CountyUnclassifiable/Attainment
    Grady CountyUnclassifiable/Attainment
    Grant CountyUnclassifiable/Attainment
    Greer CountyUnclassifiable/Attainment
    Harmon CountyUnclassifiable/Attainment
    Harper CountyUnclassifiable/Attainment
    Haskell CountyUnclassifiable/Attainment
    Hughes CountyUnclassifiable/Attainment
    Jackson CountyUnclassifiable/Attainment
    Jefferson CountyUnclassifiable/Attainment
    Johnston CountyUnclassifiable/Attainment
    Kay CountyUnclassifiable/Attainment
    Kingfisher CountyUnclassifiable/Attainment
    Kiowa CountyUnclassifiable/Attainment
    Latimer CountyUnclassifiable/Attainment
    Le Flore CountyUnclassifiable/Attainment
    Lincoln CountyUnclassifiable/Attainment
    Logan CountyUnclassifiable/Attainment
    Love CountyUnclassifiable/Attainment
    Major CountyUnclassifiable/Attainment
    Marshall CountyUnclassifiable/Attainment
    Mayes CountyUnclassifiable/Attainment
    McClain CountyUnclassifiable/Attainment
    McCurtain CountyUnclassifiable/Attainment
    McIntosh CountyUnclassifiable/Attainment
    Murray CountyUnclassifiable/Attainment
    Muskogee CountyUnclassifiable/Attainment
    Noble CountyUnclassifiable/Attainment
    Nowata CountyUnclassifiable/Attainment
    Okfuskee CountyUnclassifiable/Attainment
    Oklahoma CountyUnclassifiable/Attainment
    Okmulgee CountyUnclassifiable/Attainment
    Osage CountyUnclassifiable/Attainment
    Ottawa CountyUnclassifiable/Attainment
    Pawnee CountyUnclassifiable/Attainment
    Payne CountyUnclassifiable/Attainment
    Pittsburg CountyUnclassifiable/Attainment
    Pontotoc CountyUnclassifiable/Attainment
    Pottawatomie CountyUnclassifiable/Attainment
    Pushmataha CountyUnclassifiable/Attainment
    Roger Mills CountyUnclassifiable/Attainment
    Rogers CountyUnclassifiable/Attainment
    Seminole CountyUnclassifiable/Attainment
    Sequoyah CountyUnclassifiable/Attainment
    Stephens CountyUnclassifiable/Attainment
    Texas CountyUnclassifiable/Attainment
    Tillman CountyUnclassifiable/Attainment
    Tulsa CountyUnclassifiable/Attainment
    Wagoner CountyUnclassifiable/Attainment
    Washington CountyUnclassifiable/Attainment
    Washita CountyUnclassifiable/Attainment
    Woods CountyUnclassifiable/Attainment
    Woodward CountyUnclassifiable/Attainment

    1 Includes any Indian country in each county or area, unless otherwise specified.

    2 This date is July 20, 2012, unless otherwise noted.

    Oklahoma - 2015 8-Hour Ozone NAAQS

    [Primary and Secondary]

    Designated area1 Designation Classification
    Date2 Type Date2 Type
    Adair County1/16/18Attainment/Unclassifiable
    Alfalfa County1/16/18Attainment/Unclassifiable
    Atoka County1/16/18Attainment/Unclassifiable
    Beaver County1/16/18Attainment/Unclassifiable
    Beckham County1/16/18Attainment/Unclassifiable
    Blaine County1/16/18Attainment/Unclassifiable
    Bryan CountyAttainment/Unclassifiable
    Caddo County1/16/18Attainment/Unclassifiable
    Canadian County1/16/18Attainment/Unclassifiable
    Carter County1/16/18Attainment/Unclassifiable
    Cherokee County1/16/18Attainment/Unclassifiable
    Choctaw County1/16/18Attainment/Unclassifiable
    Cimarron County1/16/18Attainment/Unclassifiable
    Cleveland County1/16/18Attainment/Unclassifiable
    Coal County1/16/18Attainment/Unclassifiable
    Comanche County1/16/18Attainment/Unclassifiable
    Cotton County1/16/18Attainment/Unclassifiable
    Craig County1/16/18Attainment/Unclassifiable
    Creek County1/16/18Attainment/Unclassifiable
    Custer County1/16/18Attainment/Unclassifiable
    Delaware County1/16/18Attainment/Unclassifiable
    Dewey County1/16/18Attainment/Unclassifiable
    Ellis County1/16/18Attainment/Unclassifiable
    Garfield County1/16/18Attainment/Unclassifiable
    Garvin County1/16/18Attainment/Unclassifiable
    Grady County1/16/18Attainment/Unclassifiable
    Grant County1/16/18Attainment/Unclassifiable
    Greer County1/16/18Attainment/Unclassifiable
    Harmon County1/16/18Attainment/Unclassifiable
    Harper County1/16/18Attainment/Unclassifiable
    Haskell County1/16/18Attainment/Unclassifiable
    Hughes County1/16/18Attainment/Unclassifiable
    Jackson County1/16/18Attainment/Unclassifiable
    Jefferson County1/16/18Attainment/Unclassifiable
    Johnston County1/16/18Attainment/Unclassifiable
    Kay County1/16/18Attainment/Unclassifiable
    Kingfisher County1/16/18Attainment/Unclassifiable
    Kiowa County1/16/18Attainment/Unclassifiable
    Latimer County1/16/18Attainment/Unclassifiable
    Le Flore County1/16/18Attainment/Unclassifiable
    Lincoln County1/16/18Attainment/Unclassifiable
    Logan County1/16/18Attainment/Unclassifiable
    Love County1/16/18Attainment/Unclassifiable
    McClain County1/16/18Attainment/Unclassifiable
    McCurtain County1/16/18Attainment/Unclassifiable
    McIntosh County1/16/18Attainment/Unclassifiable
    Major County1/16/18Attainment/Unclassifiable
    Marshall County1/16/18Attainment/Unclassifiable
    Mayes County1/16/18Attainment/Unclassifiable
    Murray County1/16/18Attainment/Unclassifiable
    Muskogee County1/16/18Attainment/Unclassifiable
    Noble County1/16/18Attainment/Unclassifiable
    Nowata County1/16/18Attainment/Unclassifiable
    Okfuskee County1/16/18Attainment/Unclassifiable
    Oklahoma County1/16/18Attainment/Unclassifiable
    Okmulgee County1/16/18Attainment/Unclassifiable
    Osage County1/16/18Attainment/Unclassifiable
    Ottawa County1/16/18Attainment/Unclassifiable
    Pawnee County1/16/18Attainment/Unclassifiable
    Payne County1/16/18Attainment/Unclassifiable
    Pittsburg County1/16/18Attainment/Unclassifiable
    Pontotoc County1/16/18Attainment/Unclassifiable
    Pottawatomie County1/16/18Attainment/Unclassifiable
    Pushmataha County1/16/18Attainment/Unclassifiable
    Roger Mills County1/16/18Attainment/Unclassifiable
    Rogers County1/16/18Attainment/Unclassifiable
    Seminole County1/16/18Attainment/Unclassifiable
    Sequoyah County1/16/18Attainment/Unclassifiable
    Stephens County1/16/18Attainment/Unclassifiable
    Texas County1/16/18Attainment/Unclassifiable
    Tillman County1/16/18Attainment/Unclassifiable
    Tulsa County1/16/18Attainment/Unclassifiable
    Wagoner County1/16/18Attainment/Unclassifiable
    Washington County1/16/18Attainment/Unclassifiable
    Washita County1/16/18Attainment/Unclassifiable
    Woods County1/16/18Attainment/Unclassifiable
    Woodward County1/16/18Attainment/Unclassifiable

    1 Includes any Indian country in each county or area, unless otherwise specified. EPA is not determining the boundaries of any area of Indian country in this table, including any area of Indian country located in the larger designation area. The inclusion of any Indian country in the designation area is not a determination that the state has regulatory authority under the Clean Air Act for such Indian country.

    2 This date is August 3, 2018, unless otherwise noted.

    Oklahoma - 2008 Lead NAAQS

    Designated area Designation for the 2008 NAAQSa
    Date1 Type
    Whole StateUnclassifiable/Attainment.

    a Includes Indian Country located in each county or area, except as otherwise specified.

    1 December 31, 2011 unless otherwise noted.

    [43 FR 8964, Mar. 3, 1978]

    Editorial Note

    Editorial Note:

    For Federal Register citations affecting § 81.337, see the List of CFR Sections Affected, which appears in the Finding Aids section of the printed volume and at www.govinfo.gov.