![[logo] US EPA](http://www.epa.gov/epafiles/images/logo_epaseal.gif){kind=logo}
8-Hour Ozone (2008) Nonattainment Areas
As of December 14, 2012 | * Design Value (DV) notesCurrent and historical design value data can be found at http://www.epa.gov/airtrends/values.html
| Areas Listed Alphabetically | Design Values (ppm) | Classification | No. Counties NAA |
2010 Population |
EPA Region |
State | |
|---|---|---|---|---|---|---|---|
| 2008 Ozone at Designation * (monitored yrs) |
1997 Ozone (2008-2010) |
||||||
| Allentown-Bethlehem-Easton, PA | 0.076 (2009-2011) | 0.076 | Marginal | 3 | 712,481 | 3 | PA |
| Atlanta, GA | 0.080 (2009-2011) | 0.080 | Marginal | 15 | 4,753,017 | 4 | GA |
| Baltimore, MD | 0.089 (2008-2010) | 0.089 | Moderate | 6 | 2,662,691 | 3 | MD |
| Baton Rouge, LA | 0.078 (2008-2010) | 0.078 | Marginal | 5 | 732,587 | 6 | LA |
| Calaveras County, CA | 0.077 (2009-2011) | 0.083 | Marginal | 1 | 45,578 | 9 | CA |
| Charlotte-Rock Hill, NC-SC | 0.079 (2009-2011) | 0.082 | Marginal | 8 | 1,901,424 | 4 | NC-SC |
| Chicago-Naperville, IL-IN-WI | 0.077 (2009-2011) | 0.074 | Marginal | 11 | 9,179,738 | 5 | IL-IN-WI |
| Chico (Butte County), CA | 0.079 (2008-2010) | 0.079 | Marginal | 1 | 220,000 | 9 | CA |
| Cincinnati, OH-KY-IN | 0.079 (2008-2010) | 0.079 | Marginal | 9 | 1,988,951 | 4 5 | OH-KY-IN |
| Cleveland-Akron-Lorain, OH | 0.077 (2008-2010) | 0.077 | Marginal | 8 | 2,881,937 | 5 | OH |
| Columbus, OH | 0.077 (2008-2010) | 0.077 | Marginal | 6 | 1,754,632 | 5 | OH |
| Dallas-Fort Worth, TX | 0.086 (2008-2010) | 0.086 | Moderate | 10 | 6,280,413 | 6 | TX |
| Denver-Boulder-Greeley-Ft. Collins-Loveland, CO | 0.078 (2008-2010) | 0.077 | Marginal | 9 | 3,330,139 | 8 | CO |
| Dukes County, MA | 0.076 (2009-2011) | See DV Notes | Marginal | 1 | 16,535 | 1 | MA |
| Greater Connecticut, CT | 0.079 (2008-2010) | 0.078 | Marginal | 5 | 1,629,115 | 1 | CT |
| Houston-Galveston-Brazoria, TX | 0.084 (2008-2010) | 0.084 | Marginal | 8 | 5,891,999 | 6 | TX |
| Imperial County, CA | 0.078 (2008-2010) | 0.078 | Marginal | 1 | 174,528 | 9 | CA |
| Jamestown, NY | 0.077 (2008-2010) | 0.077 | Marginal | 1 | 134,905 | 2 | NY |
| Kern Co (Eastern Kern), CA | 0.083 (2008-2010) | 0.083 | Marginal | 1 | 95,176 | 9 | CA |
| Knoxville, TN | 0.077 (2009-2011) | 0.077 | Marginal | 3 | 573,452 | 4 | TN |
| Lancaster, PA | 0.077 (2009-2011) | 0.077 | Marginal | 1 | 519,445 | 3 | PA |
| Los Angeles-San Bernardino Counties (West Mojave Desert), CA | 0.099 (2008-2010) | 0.099 | Severe 15 | 2 | 868,380 | 9 | CA |
| Los Angeles-South Coast Air Basin, CA | 0.112 (2008-2010) | 0.112 | Extreme | 4 | 15,719,485 | 9 | CA |
| Mariposa County, CA | 0.077 (2009-2011) | 0.083 | Marginal | 1 | 18,251 | 9 | CA |
| Memphis, TN-MS-AR | 0.076 (2008-2010) | 0.076 | Marginal | 3 | 1,127,469 | 4 6 | TN-MS-AR |
| Morongo Band of Mission Indians | 0.112 (2008-2010) | See DV Notes | Serious | 1 | 913 | 9 | CA |
| Nevada Co. (Western Part), CA | 0.079 (2009-2011) | 0.084 | Marginal | 1 | 82,107 | 9 | CA |
| New York-N. New Jersey-Long Island, NY-NJ-CT | 0.084 (2008-2010) | 0.084 | Marginal | 24 | 20,217,137 | 2 1 | NY-NJ-CT |
| Pechanga Band of Luiseno Mission Indians of the Pechanga Reservation | 0.096 (2008-2010) | See DV Notes | Moderate | 1 | 2,844 | 9 | CA |
| Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE | 0.083 (2008-2010) | 0.083 | Marginal | 16 | 7,437,135 | 3 2 | PA-NJ-DE |
| Phoenix-Mesa, AZ | 0.077 (2008-2010) | 0.077 | Marginal | 2 | 3,849,627 | 9 | AZ |
| Pittsburgh-Beaver Valley, PA | 0.080 (2009-2011) | 0.081 | Marginal | 7 | 2,356,285 | 3 | PA |
| Reading, PA | 0.077 (2009-2011) | 0.079 | Marginal | 1 | 411,442 | 3 | PA |
| Riverside Co, (Coachella Valley), CA | 0.095 (2008-2010) | 0.095 | Severe 15 | 1 | 425,806 | 9 | CA |
| Sacramento Metro, CA | 0.095 (2009-2011) | 0.102 | Severe 15 | 6 | 2,241,057 | 9 | CA |
| San Diego County, CA | 0.082 (2009-2011) | 0.088 | Marginal | 1 | 3,095,313 | 9 | CA |
| San Francisco Bay Area, CA | 0.080 (2008-2010) | 0.080 | Marginal | 9 | 6,973,020 | 9 | CA |
| San Joaquin Valley, CA | 0.104 (2008-2010) | 0.104 | Extreme | 8 | 3,842,365 | 9 | CA |
| San Luis Obispo (Eastern San Luis Obispo), CA | 0.078 (2009-2011) | See DV Notes | Marginal | 1 | 1,649 | 9 | CA |
| Seaford, DE | 0.077 (2008-2010) | See DV Notes | Marginal | 1 | 197,145 | 3 | DE |
| Sheboygan County, WI | 0.078 (2008-2010) | 0.078 | Marginal | 1 | 115,507 | 5 | WI |
| St. Louis-St. Charles-Farmington, MO-IL | 0.077 (2008-2010) | 0.077 | Marginal | 8 | 2,571,253 | 7 5 | MO-IL |
| Tuscan Buttes, CA | 0.076 (2009-2011) | See DV Notes | Marginal | 1 | 0 | 9 | CA |
| Upper Green River Basin Area, WY | 0.078 (2008-2010) | See DV Notes | Marginal | 3 | 11,498 | 8 | WY |
| Ventura County, CA | 0.086 (2008-2010) | 0.086 | Serious | 1 | 823,262 | 9 | CA |
| Washington, DC-MD-VA | 0.081 (2008-2010) | 0.081 | Marginal | 15 | 5,136,216 | 3 | DC-MD-VA |
| 46 Total Areas | 227 | 123,003,909 | |||||
Go Top