Classifications of 8-Hour Ozone (2008) Nonattainment Areas

As of December 14, 2012

EXTREME
Los Angeles-South Coast Air Basin, CA
San Joaquin Valley, CA

SEVERE 15
Los Angeles-San Bernardino Counties (West Mojave Desert), CA
Riverside Co, (Coachella Valley), CA
Sacramento Metro, CA

SERIOUS
Morongo Band of Mission Indians
Ventura County, CA

MODERATE
Baltimore, MD
Dallas-Fort Worth, TX
Pechanga Band of Luiseno Mission Indians of the Pechanga Reservation

MARGINAL
Allentown-Bethlehem-Easton, PA
Atlanta, GA
Baton Rouge, LA
Calaveras County, CA
Charlotte-Rock Hill, NC-SC
Chicago-Naperville, IL-IN-WI
Chico (Butte County), CA
Cincinnati, OH-KY-IN
Cleveland-Akron-Lorain, OH
Columbus, OH
Denver-Boulder-Greeley-Ft. Collins-Loveland, CO
Dukes County, MA
Greater Connecticut, CT
Houston-Galveston-Brazoria, TX
Imperial County, CA
Jamestown, NY
Kern Co (Eastern Kern), CA
Knoxville, TN
Lancaster, PA
Mariposa County, CA
Memphis, TN-MS-AR
Nevada Co. (Western Part), CA
New York-N. New Jersey-Long Island, NY-NJ-CT
Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE
Phoenix-Mesa, AZ
Pittsburgh-Beaver Valley, PA
Reading, PA
San Diego County, CA
San Francisco Bay Area, CA
San Luis Obispo (Eastern San Luis Obispo), CA
Seaford, DE
Sheboygan County, WI
St. Louis-St. Charles-Farmington, MO-IL
Tuscan Buttes, CA
Upper Green River Basin Area, WY
Washington, DC-MD-VA

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