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8-Hour Ozone (2008) Designated Area/State Information with Design Values
8-Hour Ozone (2008) Designated Area/State Information with Design Values
Data is current as of September 30, 20248-Hour Ozone (2008) Notes Design Values in ppm. "Current Design Values" are current as of the posted Green Book date. Check the Air Quality Design Value site for design value updates.
| Click underlined column heading to change report order | Design Values at the Time of Designation |
Current Design Values as of 06/04/2024 (2021-2023) |
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| Area Name | State | Current Status | Current Classification or at Redesignation |
Design Values |
Monitoring Years |
Design Values | Meets NAAQS Determin.1 |
No. Ctys |
2010 Population |
EPA Region |
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| click area name for state/county list | click for classification history |
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Total Areas |
Total Ctys |
Total Population (2010) |
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| Nonattainment | 34 | 133 | 90,287,612 | ||||||||||||
| Maintenance | 13 | 92 | 32,716,183 | ||||||||||||
| Nonattainment and Maintenance | 47 | 225 | 123,003,795 | ||||||||||||
| Allentown-Bethlehem-Easton, PA | PA | Nonattainment | Marginal | 0.076 | 2009-2011 | 0.067 | Yes | 3 | 712,481 | 03 | |||||
| Atlanta, GA | GA | Maintenance | Moderate | 0.080 | 2009-2011 | 0.070 | Yes | 15 | 4,753,017 | 04 | |||||
| Baltimore, MD | MD | Nonattainment | Moderate | 0.089 | 2008-2010 | 0.073 | Yes | 6 | 2,662,691 | 03 | |||||
| Baton Rouge, LA | LA | Maintenance | Marginal | 0.078 | 2008-2010 | 0.072 | Yes | 5 | 732,587 | 06 | |||||
| Calaveras County, CA | CA | Nonattainment | Marginal | 0.077 | 2009-2011 | 0.066 | Yes | 1 | 45,578 | 09 | |||||
| Charlotte-Rock Hill, NC-SC | NC | Maintenance | Marginal | 0.079 | 2009-2011 | 0.069 | Yes | 7 | 1,723,605 | 04 | |||||
| Charlotte-Rock Hill, NC-SC | SC | Maintenance | Marginal | 0.079 | 2009-2011 | 0.069 | Yes | 1 | 177,819 | 04 | |||||
| Chicago-Naperville, IL-IN-WI | IL | Maintenance | Serious | 0.077 | 2009-2011 | 0.077 | No | 8 | 8,389,546 | 05 | |||||
| Chicago-Naperville, IL-IN-WI | IN | Maintenance | Serious | 0.077 | 2009-2011 | 0.077 | No | 2 | 660,348 | 05 | |||||
| Chicago-Naperville, IL-IN-WI | WI | Maintenance | Serious | 0.077 | 2009-2011 | 0.077 | No | 1 | 129,844 | 05 | |||||
| Chico (Butte County), CA | CA | Nonattainment | Marginal | 0.079 | 2008-2010 | 0.067 | Yes | 1 | 220,000 | 09 | |||||
| Cincinnati, OH-KY-IN | IN | Maintenance | Marginal | 0.079 | 2008-2010 | 0.070 | Yes | 1 | 13,600 | 05 | |||||
| Cincinnati, OH-KY-IN | KY | Maintenance | Marginal | 0.079 | 2008-2010 | 0.070 | Yes | 3 | 352,751 | 04 | |||||
| Cincinnati, OH-KY-IN | OH | Maintenance | Marginal | 0.079 | 2008-2010 | 0.070 | Yes | 5 | 1,622,600 | 05 | |||||
| Cleveland-Akron-Lorain, OH | OH | Maintenance | Marginal | 0.077 | 2008-2010 | 0.073 | Yes | 8 | 2,881,937 | 05 | |||||
| Columbus, OH | OH | Maintenance | Marginal | 0.077 | 2008-2010 | 0.067 | Yes | 6 | 1,754,632 | 05 | |||||
| Dallas-Fort Worth, TX | TX | Nonattainment | Severe 15 | 0.086 | 2008-2010 | 0.081 | No | 10 | 6,280,413 | 06 | |||||
| Denver-Boulder-Greeley-Ft. Collins-Loveland, CO | CO | Nonattainment | Severe 15 | 0.078 | 2008-2010 | 0.081 | No | 9 | 3,330,139 | 08 | |||||
| Dukes County, MA | MA | Nonattainment | Marginal | 0.076 | 2009-2011 | 0.067 | Yes | 1 | 16,535 | 01 | |||||
| Greater Connecticut, CT | CT | Nonattainment | Serious | 0.079 | 2008-2010 | 0.073 | Yes | 5 | 1,629,115 | 01 | |||||
| Houston-Galveston-Brazoria, TX | TX | Nonattainment | Severe 15 | 0.084 | 2008-2010 | 0.083 | No | 8 | 5,891,999 | 06 | |||||
| Imperial County, CA | CA | Nonattainment | Moderate | 0.078 | 2008-2010 | 0.077 | No | 1 | 174,528 | 09 | |||||
| Inland Sheboygan County, WI | WI | Maintenance | Moderate | 0.078 | 2008-2010 | 0.070 | Yes | 1 | 53,851 | 05 | |||||
| Jamestown, NY | NY | Nonattainment | Marginal | 0.077 | 2008-2010 | 0.069 | Yes | 1 | 134,905 | 02 | |||||
| Kern County (Eastern Kern), CA | CA | Nonattainment | Severe 15 | 0.083 | 2008-2010 | 0.075 | Yes | 1 | 95,176 | 09 | |||||
| Knoxville, TN | TN | Maintenance | Marginal | 0.077 | 2009-2011 | 0.067 | Yes | 3 | 573,452 | 04 | |||||
| Lancaster, PA | PA | Nonattainment | Marginal | 0.077 | 2009-2011 | 0.064 | Yes | 1 | 519,445 | 03 | |||||
| Los Angeles-San Bernardino Counties (West Mojave Desert), CA | CA | Nonattainment | Severe 15 | 0.099 | 2008-2010 | 0.090 | No | 2 | 868,380 | 09 | |||||
| Los Angeles-South Coast Air Basin, CA | CA | Nonattainment | Extreme | 0.112 | 2008-2010 | 0.106 | No | 4 | 15,719,485 | 09 | |||||
| Mariposa County, CA | CA | Nonattainment | Moderate | 0.077 | 2009-2011 | 0.073 | Yes | 1 | 18,251 | 09 | |||||
| Memphis, TN-MS-AR | AR | Maintenance | Marginal | 0.076 | 2008-2010 | 0.072 | Yes | 1 | 50,902 | 06 | |||||
| Memphis, TN-MS-AR | MS | Maintenance | Marginal | 0.076 | 2008-2010 | 0.072 | Yes | 1 | 148,923 | 04 | |||||
| Memphis, TN-MS-AR | TN | Maintenance | Marginal | 0.076 | 2008-2010 | 0.072 | Yes | 1 | 927,644 | 04 | |||||
| Morongo Band of Mission Indians, CA | CA | Nonattainment | Severe 15 | 0.112 | 2008-2010 | 0.094 | No | 1 | 913 | 09 | |||||
| Nevada County (Western part), CA | CA | Nonattainment | Serious | 0.079 | 2009-2011 | 0.078 | No | 1 | 82,107 | 09 | |||||
| New York-N. New Jersey-Long Island, NY-NJ-CT | CT | Nonattainment | Severe 15 | 0.084 | 2008-2010 | 0.082 | No | 3 | 1,944,982 | 01 | |||||
| New York-N. New Jersey-Long Island, NY-NJ-CT | NJ | Nonattainment | Severe 15 | 0.084 | 2008-2010 | 0.082 | No | 12 | 6,003,340 | 02 | |||||
| New York-N. New Jersey-Long Island, NY-NJ-CT | NY | Nonattainment | Severe 15 | 0.084 | 2008-2010 | 0.082 | No | 9 | 12,268,815 | 02 | |||||
| Pechanga Band of Luiseno Mission Indians of the Pechanga Reservation | CA | Nonattainment | Moderate | 0.096 | 2008-2010 | Insufficient Data | 2 | 2,844 | 09 | ||||||
| Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE | DE | Nonattainment | Marginal | 0.083 | 2008-2010 | 0.073 | Yes | 1 | 538,479 | 03 | |||||
| Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE | MD | Nonattainment | Marginal | 0.083 | 2008-2010 | 0.073 | Yes | 1 | 101,108 | 03 | |||||
| Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE | NJ | Nonattainment | Marginal | 0.083 | 2008-2010 | 0.073 | Yes | 9 | 2,788,554 | 02 | |||||
| Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE | PA | Nonattainment | Marginal | 0.083 | 2008-2010 | 0.073 | Yes | 5 | 4,008,994 | 03 | |||||
| Phoenix-Mesa, AZ | AZ | Nonattainment | Moderate | 0.077 | 2008-2010 | 0.080 | No | 2 | 3,849,627 | 09 | |||||
| Pittsburgh-Beaver Valley, PA | PA | Nonattainment | Marginal | 0.080 | 2009-2011 | 0.067 | Yes | 7 | 2,356,285 | 03 | |||||
| Reading, PA | PA | Nonattainment | Marginal | 0.077 | 2009-2011 | Insufficient Data | 1 | 411,442 | 03 | ||||||
| Riverside County (Coachella Valley), CA | CA | Nonattainment | Extreme | 0.095 | 2008-2010 | 0.085 | No | 1 | 425,806 | 09 | |||||
| Sacramento Metro, CA | CA | Nonattainment | Severe 15 | 0.095 | 2009-2011 | 0.076 | No | 6 | 2,241,057 | 09 | |||||
| San Diego County, CA | CA | Nonattainment | Severe 15 | 0.082 | 2009-2011 | 0.079 | No | 1 | 3,095,199 | 09 | |||||
| San Francisco Bay Area, CA | CA | Nonattainment | Marginal | 0.080 | 2008-2010 | 0.070 | Yes | 9 | 6,973,020 | 09 | |||||
| San Joaquin Valley, CA | CA | Nonattainment | Extreme | 0.104 | 2008-2010 | 0.090 | No | 8 | 3,842,365 | 09 | |||||
| San Luis Obispo (Eastern San Luis Obispo), CA | CA | Nonattainment | Marginal | 0.078 | 2009-2011 | 0.071 | Yes | 1 | 1,649 | 09 | |||||
| Seaford, DE | DE | Nonattainment | Marginal | 0.077 | 2008-2010 | 0.065 | Yes | 1 | 197,145 | 03 | |||||
| Shoreline Sheboygan County, WI | WI | Maintenance | Moderate | 0.077 | No | 1 | 61,656 | 05 | |||||||
| St. Louis-St. Charles-Farmington, MO-IL | IL | Maintenance | Marginal | 0.077 | 2008-2010 | 0.074 | Yes | 3 | 572,295 | 05 | |||||
| St. Louis-St. Charles-Farmington, MO-IL | MO | Maintenance | Marginal | 0.077 | 2008-2010 | 0.074 | Yes | 5 | 1,998,958 | 07 | |||||
| Tuscan Buttes, CA | CA | Nonattainment | Marginal | 0.076 | 2009-2011 | 0.071 | Yes | 1 | 0 | 09 | |||||
| Upper Green River Basin Area, WY | WY | Nonattainment | Marginal | 0.078 | 2008-2010 | 0.068 | Yes | 3 | 11,498 | 08 | |||||
| Ventura County, CA | CA | Nonattainment | Serious | 0.086 | 2008-2010 | 0.075 | Yes | 1 | 823,262 | 09 | |||||
| Washington, DC-MD-VA | DC | Maintenance | Marginal | 0.081 | 2008-2010 | 0.071 | Yes | 1 | 601,723 | 03 | |||||
| Washington, DC-MD-VA | MD | Maintenance | Marginal | 0.081 | 2008-2010 | 0.071 | Yes | 5 | 2,303,870 | 03 | |||||
| Washington, DC-MD-VA | VA | Maintenance | Marginal | 0.081 | 2008-2010 | 0.071 | Yes | 9 | 2,230,623 | 03 | |||||
1 See the Air Quality Design Value site spreadsheet footnotes for information about "Insufficient Data" Meets NAAQS Determinations.
8-Hour Ozone (2008) Notes Design Values in ppm. "Current Design Values" are current as of the posted Green Book date. Check the Air Quality Design Value site for design value updates.
County subtotals and grand totals may not equal sum of the counties. Part counties are only counted one time within groupings. Multi-state nonattainment areas are counted in totals as maintenance areas when all states in the area have been redesignated. Multi-state areas are counted only once in area totals.
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