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8-Hour Ozone (2008) Designated Area/State Information

Data is current as of March 31, 2019

8-Hour Ozone (2008) 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 37 160 104,719,073  
Maintenance 9 65 18,284,722  
Nonattainment and Maintenance 46 225 123,003,795  
Allentown-Bethlehem-Easton, PA PA Nonattainment F Marginal 3 712,481 03
Atlanta, GA GA Maintenance E Moderate 15 4,753,017 04
Baltimore, MD MD Nonattainment E Moderate 6 2,662,691 03
Baton Rouge, LA LA Maintenance F Marginal 5 732,587 06
Calaveras County, CA CA Nonattainment F Marginal 1 45,578 09
Charlotte-Rock Hill, NC-SC NC Maintenance F Marginal 7 1,723,605 04
Charlotte-Rock Hill, NC-SC SC Maintenance F Marginal 1 177,819 04
Chicago-Naperville, IL-IN-WI IL Nonattainment E Moderate 8 8,389,546 05
Chicago-Naperville, IL-IN-WI IN Nonattainment E Moderate 2 660,348 05
Chicago-Naperville, IL-IN-WI WI Nonattainment E Moderate 1 129,844 05
Chico (Butte County), CA CA Nonattainment F Marginal 1 220,000 09
Cincinnati, OH-KY-IN IN Maintenance F Marginal 1 13,600 05
Cincinnati, OH-KY-IN KY Maintenance F Marginal 3 352,751 04
Cincinnati, OH-KY-IN OH Maintenance F Marginal 5 1,622,600 05
Cleveland-Akron-Lorain, OH OH Maintenance F Marginal 8 2,881,937 05
Columbus, OH OH Maintenance F Marginal 6 1,754,632 05
Dallas-Fort Worth, TX TX Nonattainment E Moderate 10 6,280,413 06
Denver-Boulder-Greeley-Ft. Collins-Loveland, CO CO Nonattainment E Moderate 9 3,330,139 08
Dukes County, MA MA Nonattainment F Marginal 1 16,535 01
Greater Connecticut, CT CT Nonattainment E Moderate 5 1,629,115 01
Houston-Galveston-Brazoria, TX TX Nonattainment E Moderate 8 5,891,999 06
Imperial County, CA CA Nonattainment E Moderate 1 174,528 09
Jamestown, NY NY Nonattainment F Marginal 1 134,905 02
Kern Co (Eastern Kern), CA CA Nonattainment D Serious 1 95,176 09
Knoxville, TN TN Maintenance F Marginal 3 573,452 04
Lancaster, PA PA Nonattainment F Marginal 1 519,445 03
Los Angeles-San Bernardino Counties (West Mojave Desert), CA CA Nonattainment C Severe 15 2 868,380 09
Los Angeles-South Coast Air Basin, CA CA Nonattainment A Extreme 4 15,719,485 09
Mariposa County, CA CA Nonattainment E Moderate 1 18,251 09
Memphis, TN-MS-AR AR Maintenance F Marginal 1 50,902 06
Memphis, TN-MS-AR MS Maintenance F Marginal 1 148,923 04
Memphis, TN-MS-AR TN Maintenance F Marginal 1 927,644 04
Morongo Band of Mission Indians CA Nonattainment D Serious 1 913 09
Nevada Co. (Western part), CA CA Nonattainment E Moderate 1 82,107 09
New York-N. New Jersey-Long Island, NY-NJ-CT CT Nonattainment E Moderate 3 1,944,982 01
New York-N. New Jersey-Long Island, NY-NJ-CT NJ Nonattainment E Moderate 12 6,003,340 02
New York-N. New Jersey-Long Island, NY-NJ-CT NY Nonattainment E Moderate 9 12,268,815 02
Pechanga Band of Luiseno Mission Indians of the Pechanga Reservation CA Nonattainment E Moderate 2 2,844 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 E Moderate 2 3,849,627 09
Pittsburgh-Beaver Valley, PA PA Nonattainment F Marginal 7 2,356,285 03
Reading, PA PA Nonattainment F Marginal 1 411,442 03
Riverside Co, (Coachella Valley), CA CA Nonattainment C Severe 15 1 425,806 09
Sacramento Metro, CA CA Nonattainment C Severe 15 6 2,241,057 09
San Diego County, CA CA Nonattainment E Moderate 1 3,095,199 09
San Francisco Bay Area, CA CA Nonattainment F Marginal 9 6,973,020 09
San Joaquin Valley, CA CA Nonattainment A Extreme 8 3,842,365 09
San Luis Obispo (Eastern San Luis Obispo), CA CA Nonattainment F Marginal 1 1,649 09
Seaford, DE DE Nonattainment F Marginal 1 197,145 03
Sheboygan County, WI WI Nonattainment E Moderate 1 115,507 05
St. Louis-St. Charles-Farmington, MO-IL IL Maintenance F Marginal 3 572,295 05
St. Louis-St. Charles-Farmington, MO-IL MO Maintenance F Marginal 5 1,998,958 07
Tuscan Buttes, CA CA Nonattainment F Marginal 1 0 09
Upper Green River Basin Area, WY WY Nonattainment F Marginal 3 11,498 08
Ventura County, CA CA Nonattainment D Serious 1 823,262 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

8-Hour Ozone (2008) 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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