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8-Hour Ozone (2015) Designated Area/State Information

Data is current as of July 31, 2019

8-Hour Ozone (2015) Notes

Display:       Nonattainment and Maintenance Areas       Nonattainment Areas       Maintenance Areas
Area Name  State  Current Status  class sort Current
Classification
or at
Redesignation
 
No.
Counties
 
2010
Population
 
EPA
Region
 
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click area name for state/county list
click for
Classification history
 
Total
Areas

Total
Counties
Total
Population
(2010)
 
Nonattainment 52 201 124,069,378  
Maintenance 0 0 0  
Nonattainment and Maintenance 52 201 124,069,378  
Allegan County, MI MI Nonattainment F Marginal 1 46,615 05
Amador County, CA CA Nonattainment F Marginal 1 38,091 09
Atlanta, GA GA Nonattainment F Marginal 7 3,669,376 04
Baltimore, MD MD Nonattainment F Marginal 6 2,662,691 03
Berrien County, MI MI Nonattainment F Marginal 1 156,813 05
Butte County, CA CA Nonattainment F Marginal 1 220,000 09
Calaveras County, CA CA Nonattainment F Marginal 1 45,578 09
Chicago, IL-IN-WI IL Nonattainment F Marginal 7 8,076,475 05
Chicago, IL-IN-WI IN Nonattainment F Marginal 1 421,162 05
Chicago, IL-IN-WI WI Nonattainment F Marginal 1 116,383 05
Cincinnati, OH-KY KY Nonattainment F Marginal 3 347,968 04
Cincinnati, OH-KY OH Nonattainment F Marginal 4 1,580,560 05
Cleveland, OH OH Nonattainment F Marginal 7 2,780,440 05
Columbus, OH OH Nonattainment F Marginal 4 1,650,276 05
Dallas-Fort Worth, TX TX Nonattainment F Marginal 9 6,202,076 06
Denver Metro/North Front Range, CO CO Nonattainment F Marginal 9 3,329,773 08
Detroit, MI MI Nonattainment F Marginal 7 4,704,743 05
Dona Ana County (Sunland Park Area), NM NM Nonattainment F Marginal 1 12,675 06
Door County, WI WI Nonattainment G Marginal (Rural Transport) 1 31 05
Greater Connecticut, CT CT Nonattainment F Marginal 5 1,629,115 01
Houston-Galveston-Brazoria, TX TX Nonattainment F Marginal 6 5,773,151 06
Imperial County, CA CA Nonattainment F Marginal 1 174,528 09
Kern County (Eastern Kern), CA CA Nonattainment E Moderate 1 95,066 09
Las Vegas, NV NV Nonattainment F Marginal 1 1,892,250 09
Los Angeles-San Bernardino Counties (West Mojave Desert), CA CA Nonattainment C Severe-15 2 866,960 09
Los Angeles-South Coast Air Basin, CA CA Nonattainment A Extreme 4 15,702,771 09
Louisville, KY-IN IN Nonattainment F Marginal 2 184,810 05
Louisville, KY-IN KY Nonattainment F Marginal 3 875,731 04
Manitowoc County, WI WI Nonattainment F Marginal 1 48,956 05
Mariposa County, CA CA Nonattainment F Marginal 1 18,251 09
Morongo Band of Mission Indians, CA CA Nonattainment D Serious 1 932 09
Muskegon County, MI MI Nonattainment F Marginal 1 146,852 05
Nevada County (Western part), CA CA Nonattainment E Moderate 1 82,042 09
New York-Northern New Jersey-Long Island, NY-NJ-CT CT Nonattainment E Moderate 3 1,944,982 01
New York-Northern New Jersey-Long Island, NY-NJ-CT NJ Nonattainment E Moderate 12 6,003,340 02
New York-Northern New Jersey-Long Island, NY-NJ-CT NY Nonattainment E Moderate 9 12,268,815 02
Northern Milwaukee/Ozaukee Shoreline, WI WI Nonattainment F Marginal 2 69,817 05
Northern Wasatch Front, UT UT Nonattainment F Marginal 4 1,615,574 08
Pechanga Band of Luiseno Mission Indians of the Pechanga Reservation CA Nonattainment F Marginal 2 652 09
Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE DE Nonattainment F Marginal 1 538,479 03
Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE MD Nonattainment F Marginal 1 101,108 03
Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE NJ Nonattainment F Marginal 9 2,788,554 02
Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE PA Nonattainment F Marginal 5 4,008,994 03
Phoenix-Mesa, AZ AZ Nonattainment F Marginal 3 3,945,140 09
Riverside County (Coachella Valley), CA CA Nonattainment C Severe-15 1 425,029 09
Sacramento Metro, CA CA Nonattainment E Moderate 6 2,240,448 09
San Antonio, TX TX Nonattainment F Marginal 1 1,714,773 06
San Diego County, CA CA Nonattainment E Moderate 1 3,077,287 09
San Francisco Bay Area, CA CA Nonattainment F Marginal 9 6,969,365 09
San Joaquin Valley, CA CA Nonattainment A Extreme 8 3,841,897 09
San Luis Obispo (Eastern part), CA CA Nonattainment F Marginal 1 1,290 09
Sheboygan County, WI WI Nonattainment F Marginal 1 61,656 05
Southern Wasatch Front, UT UT Nonattainment F Marginal 1 515,895 08
St. Louis, MO-IL IL Nonattainment F Marginal 2 539,338 05
St. Louis, MO-IL MO Nonattainment F Marginal 4 1,696,841 07
Sutter Buttes, CA CA Nonattainment F Marginal 1 3 09
Tuolumne County, CA CA Nonattainment F Marginal 1 55,365 09
Tuscan Buttes, CA CA Nonattainment G Marginal (Rural Transport) 1 0 09
Uinta Basin, UT UT Nonattainment F Marginal 2 47,317 08
Ventura County, CA CA Nonattainment D Serious 1 820,808 09
Washington, DC-MD-VA DC Nonattainment F Marginal 1 601,723 03
Washington, DC-MD-VA MD Nonattainment F Marginal 5 2,303,870 03
Washington, DC-MD-VA VA Nonattainment F Marginal 9 2,230,623 03
Yuma, AZ AZ Nonattainment F Marginal 1 87,254 09

8-Hour Ozone (2015) Notes

County subtotals and grand totals may not equal sum of the counties. Part counties are only counted one time within groupings. Multi-state areas are counted only once in area totals, and are counted in maintenance totals when all states in the area have been redesignated.

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