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1-Hour Ozone (1979) Maintenance Area (Redesignated from Nonattainment) State/Area/County Report - NAAQS Revoked

Data is current as of August 31, 2020


ALABAMA (Region IV)
  Birmingham, AL (Marginal - Maintenance)
Jefferson County
Shelby County
 
ARIZONA (Region IX)
  Phoenix, AZ (Serious - Maintenance)
Maricopa County (P)
Maricopa Association of Governments Urban Planning Area
 
CALIFORNIA (Region IX)
  East Kern Co, CA (Serious - Maintenance)
Kern County (P)
 
  Monterey Bay, CA (Moderate - Maintenance)
Monterey County
San Benito County
Santa Cruz County
 
  San Diego, CA (Serious - Maintenance)
San Diego County
 
  Santa Barbara-Santa Maria-Lompoc, CA (Serious - Maintenance)
Santa Barbara County
 
COLORADO (Region VIII)
  Denver-Boulder, CO (Section 185A - Maintenance)
Adams County (P)
West of Kiowa Creek
Arapahoe County (P)
West of Kiowa Creek
Boulder County (P)
Excluding Rocky Mtn. National Park
Broomfield County
Denver County
Douglas County
Jefferson County
 
FLORIDA (Region IV)
  Jacksonville, FL (Section 185A - Maintenance)
Duval County
 
  Miami-Fort Lauderdale-W. Palm Beach, FL (Moderate - Maintenance)
Broward County
Miami-Dade County
Palm Beach County
 
  Tampa-St. Petersburg-Clearwater, FL (Marginal - Maintenance)
Hillsborough County
Pinellas County
 
GEORGIA (Region IV)
  Atlanta, GA (Severe-15 - Maintenance)
Cherokee County
Clayton County
Cobb County
Coweta County
DeKalb County
Douglas County
Fayette County
Forsyth County
Fulton County
Gwinnett County
Henry County
Paulding County
Rockdale County
 
ILLINOIS (Region V)
  Jersey Co, IL (Marginal - Maintenance)
Jersey County
 
  St. Louis, MO-IL (Serious - Maintenance)
Madison County
Monroe County
St. Clair County
 
INDIANA (Region V)
  Evansville, IN (Marginal - Maintenance)
Vanderburgh County
 
  Indianapolis, IN (Marginal - Maintenance)
Marion County
 
  Louisville, KY-IN (Moderate - Maintenance)
Clark County
Floyd County
 
  South Bend-Elkhart, IN (Marginal - Maintenance)
Elkhart County
St. Joseph County
 
KANSAS (Region VII)
  Kansas City, MO-KS (Other - Maintenance)
Johnson County
Wyandotte County
 
KENTUCKY (Region IV)
  Cincinnati-Hamilton, OH-KY (Moderate - Maintenance)
Boone County
Campbell County
Kenton County
 
  Edmonson Co, KY (Rural Transport (Marginal) - Maintenance)
Edmonson County
 
  Huntington-Ashland, WV-KY (Moderate - Maintenance)
Boyd County
Greenup County (P)
 
  Lexington-Fayette, KY (Marginal - Maintenance)
Fayette County
Scott County
 
  Louisville, KY-IN (Moderate - Maintenance)
Bullitt County (P)
Jefferson County
Oldham County (P)
 
  Owensboro, KY (Marginal - Maintenance)
Daviess County
Hancock County (P)
 
  Paducah, KY (Marginal - Maintenance)
Livingston County (P)
Marshall County
 
LOUISIANA (Region VI)
  Beauregard Par, LA (Incomplete Data - Maintenance)
Beauregard Parish
 
  Grant Par, LA (Incomplete Data - Maintenance)
Grant Parish
 
  Lafayette, LA (Section 185A - Maintenance)
Lafayette Parish
 
  Lafourche Par, LA (Incomplete Data - Maintenance)
Lafourche Parish
 
  Lake Charles, LA (Marginal - Maintenance)
Calcasieu Parish
 
  New Orleans, LA (Section 185A - Maintenance)
Jefferson Parish
Orleans Parish
St. Bernard Parish
St. Charles Parish
 
  Pointe Coupee Parish, LA (Marginal - Maintenance)
Pointe Coupee Parish
 
  St James Par, LA (Incomplete Data - Maintenance)
St. James Parish
 
  St Mary Par, LA (Incomplete Data - Maintenance)
St. Mary Parish
 
MAINE (Region I)
  Hancock & Waldo Cos, ME (Marginal - Maintenance)
Hancock County
Waldo County
 
MARYLAND (Region III)
  Kent and Queen Anne's Co.s, MD (Marginal - Maintenance)
Kent County
Queen Anne's County
 
MICHIGAN (Region V)
  Allegan Co, MI (Incomplete Data - Maintenance)
Allegan County
 
  Detroit-Ann Arbor, MI (Moderate - Maintenance)
Livingston County
Macomb County
Monroe County
Oakland County
St. Clair County
Washtenaw County
Wayne County
 
  Flint, MI (Section 185A - Maintenance)
Genesee County
 
  Grand Rapids, MI (Moderate - Maintenance)
Kent County
Ottawa County
 
  Muskegon, MI (Moderate - Maintenance)
Muskegon County
 
  Saginaw-Bay City-Midland, MI (Incomplete Data - Maintenance)
Bay County
Midland County
Saginaw County
 
MISSOURI (Region VII)
  Kansas City, MO-KS (Other - Maintenance)
Clay County
Jackson County
Platte County
 
  St. Louis, MO-IL (Serious - Maintenance)
Franklin County
Jefferson County
St. Charles County
St. Louis County
St. Louis city
 
NORTH CAROLINA (Region IV)
  Charlotte-Gastonia, NC (Moderate - Maintenance)
Gaston County
Mecklenburg County
 
  Greensboro-Winston-Salem-High Point, NC (Moderate - Maintenance)
Davidson County
Davie County (P)
Forsyth County
Guilford County
 
  Raleigh-Durham, NC (Moderate - Maintenance)
Durham County
Granville County (P)
Dutchville Township
Wake County
 
OHIO (Region V)
  Canton, OH (Marginal - Maintenance)
Stark County
 
  Cincinnati-Hamilton, OH-KY (Moderate - Maintenance)
Butler County
Clermont County
Hamilton County
Warren County
 
  Cleveland-Akron-Lorain, OH (Moderate - Maintenance)
Ashtabula County
Cuyahoga County
Geauga County
Lake County
Lorain County
Medina County
Portage County
Summit County
 
  Clinton Co, OH (Section 185A - Maintenance)
Clinton County
 
  Columbiana Co, OH (Incomplete Data - Maintenance)
Columbiana County
 
  Columbus, OH (Marginal - Maintenance)
Delaware County
Franklin County
Licking County
 
  Dayton-Springfield, OH (Moderate - Maintenance)
Clark County
Greene County
Miami County
Montgomery County
 
  Preble Co, OH (Section 185A - Maintenance)
Preble County
 
  Steubenville, OH (Section 185A - Maintenance)
Jefferson County
 
  Toledo, OH (Moderate - Maintenance)
Lucas County
Wood County
 
  Youngstown-Warren-Sharon, OH-PA (OH portion) (Marginal - Maintenance)
Mahoning County
Trumbull County
 
OREGON (Region X)
  Portland-Vancouver AQMA, OR-WA (Marginal - Maintenance)
Clackamas County (P)
Air Quality Maintenance Area
Multnomah County (P)
Air Quality Maintenance Area
Washington County (P)
Air Quality Maintenance Area
 
PENNSYLVANIA (Region III)
  Pittsburgh-Beaver Valley, PA (Moderate - Maintenance)
Allegheny County
Armstrong County
Beaver County
Butler County
Fayette County
Washington County
Westmoreland County
 
  Reading, PA (Moderate - Maintenance)
Berks County
 
SOUTH CAROLINA (Region IV)
  Cherokee Co, SC (Marginal - Maintenance)
Cherokee County
 
TENNESSEE (Region IV)
  Knoxville, TN (Marginal - Maintenance)
Knox County
 
  Memphis, TN (Marginal - Maintenance)
Shelby County
 
  Nashville, TN (Moderate - Maintenance)
Davidson County
Rutherford County
Sumner County
Williamson County
Wilson County
 
TEXAS (Region VI)
  Victoria, TX (Incomplete Data - Maintenance)
Victoria County
 
UTAH (Region VIII)
  Salt Lake City, UT (Moderate - Maintenance)
Davis County
Salt Lake County
 
VIRGINIA (Region III)
  Norfolk-Virginia Beach-Newport News (Hampton Roads), VA (Marginal - Maintenance)
Chesapeake city
Hampton city
James City County
Newport News city
Norfolk city
Poquoson city
Portsmouth city
Suffolk city
Virginia Beach city
Williamsburg city
York County
 
  Richmond, VA (Moderate - Maintenance)
Charles City County (P)
Chesterfield County
Colonial Heights city
Hanover County
Henrico County
Hopewell city
Richmond city
 
WASHINGTON (Region X)
  Portland-Vancouver AQMA, OR-WA (Marginal - Maintenance)
Clark County (P)
Air Quality Maintenance Area
 
  Seattle-Tacoma, WA (Marginal - Maintenance)
King County (P)
Pierce County
Snohomish County (P)
 
WEST VIRGINIA (Region III)
  Charleston, WV (Moderate - Maintenance)
Kanawha County
Putnam County
 
  Greenbrier, WV (Marginal - Maintenance)
Greenbrier County
 
  Huntington-Ashland, WV-KY (Moderate - Maintenance)
Cabell County
Wayne County
 
  Parkersburg-Marietta, WV (Moderate - Maintenance)
Wood County
 
WISCONSIN (Region V)
  Door Co, WI (Rural Transport (Marginal) - Maintenance)
Door County
 
  Kewaunee Co, WI (Moderate - Maintenance)
Kewaunee County
 
  Manitowoc Co, WI (Moderate - Maintenance)
Manitowoc County
 
  Sheboygan, WI (Moderate - Maintenance)
Sheboygan County
 
  Walworth Co, WI (Marginal - Maintenance)
Walworth County

The former 1-hour ozone designations and classifications as of June 15, 2004, are being retained in subpart C of Part 81 for purposes of the anti backsliding provisions of 40 CFR 51.905. 40 CFR 51.905(c) references subpart C of part 81 for the areas affected by the anti-backsliding regulation.


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