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8-Hour Ozone (1997) Nonattainment Area Area/State/County Report - NAAQS Revoked

Data is current as of April 30, 2018
View Notes


Area Name   (Category/Classification)      (P) Partial County





  Albany-Schenectady-Troy, NY (Marginal - Nonattainment)
NEW YORK (Region II)
Albany County
Greene County
Montgomery County
Rensselaer County
Saratoga County
Schenectady County
Schoharie County
 
  Amador and Calaveras Cos. (Central Mountain Cos.), CA (Moderate - Nonattainment)
CALIFORNIA (Region IX)
Amador County
Calaveras County
 
  Baltimore, MD (Serious - Nonattainment)
MARYLAND (Region III)
Anne Arundel County
Baltimore County
Baltimore city
Carroll County
Harford County
Howard County
 
  Boston-Lawrence-Worcester (E. Mass), MA (Moderate - Nonattainment)
MASSACHUSETTS (Region I)
Barnstable County
Bristol County
Dukes County
Essex County
Middlesex County
Nantucket County
Norfolk County
Plymouth County
Suffolk County
Worcester County
 
  Buffalo-Niagara Falls, NY (Moderate - Nonattainment)
NEW YORK (Region II)
Erie County
Niagara County
 
  Chico, CA (Marginal - Nonattainment)
CALIFORNIA (Region IX)
Butte County
 
  Dallas-Fort Worth, TX (Serious - Nonattainment)
TEXAS (Region VI)
Collin County
Dallas County
Denton County
Ellis County
Johnson County
Kaufman County
Parker County
Rockwall County
Tarrant County
 
  Denver-Boulder-Greeley-Ft. Collins-Loveland, CO (Marginal - Nonattainment)
COLORADO (Region VIII)
Adams County
Arapahoe County
Boulder County
Broomfield County
Denver County
Douglas County
Jefferson County
Larimer County (P)
Weld County (P)
 
  Essex Co (Whiteface Mtn), NY (Marginal - Nonattainment)
NEW YORK (Region II)
Essex County (P)
 
  Greater Connecticut, CT (Moderate - Nonattainment)
CONNECTICUT (Region I)
Hartford County
Litchfield County
New London County
Tolland County
Windham County
 
  Houston-Galveston-Brazoria, TX (Severe 15 - Nonattainment)
TEXAS (Region VI)
Brazoria County
Chambers County
Fort Bend County
Galveston County
Harris County
Liberty County
Montgomery County
Waller County
 
  Imperial Co, CA (Moderate - Nonattainment)
CALIFORNIA (Region IX)
Imperial County
 
  Jamestown, NY (Moderate - Nonattainment)
NEW YORK (Region II)
Chautauqua County
 
  Jefferson Co, NY (Moderate - Nonattainment)
NEW YORK (Region II)
Jefferson County
 
  Kern Co (Eastern Kern), CA (Moderate - Nonattainment)
CALIFORNIA (Region IX)
Kern County (P)
 
  Los Angeles-San Bernardino Cos. (W Mojave Desert), CA (Severe 15 - Nonattainment)
CALIFORNIA (Region IX)
Los Angeles County (P)
San Bernardino County (P)
 
  Los Angeles-South Coast Air Basin, CA (Extreme - Nonattainment)
CALIFORNIA (Region IX)
Los Angeles County (P)
Orange County
Riverside County (P)
San Bernardino County (P)
 
  Mariposa and Tuolumne Cos (Southern Mtn), CA (Moderate - Nonattainment)
CALIFORNIA (Region IX)
Mariposa County
Tuolumne County
 
  Morongo Band of Mission Indians (Severe 17 - Nonattainment)
CALIFORNIA (Region IX)
Riverside County (P)
 
  Nevada Co. (Western part), CA (Moderate - Nonattainment)
CALIFORNIA (Region IX)
Nevada County (P)
 
  New York-N. New Jersey-Long Island, NY-NJ-CT (Moderate - Nonattainment)
CONNECTICUT (Region I)
Fairfield County
Middlesex County
New Haven County
NEW JERSEY (Region II)
Bergen County
Essex County
Hudson County
Hunterdon County
Middlesex County
Monmouth County
Morris County
Passaic County
Somerset County
Sussex County
Union County
Warren County
NEW YORK (Region II)
Bronx County
Kings County
Nassau County
New York County
Queens County
Richmond County
Rockland County
Suffolk County
Westchester County
 
  Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE (Moderate - Nonattainment)
DELAWARE (Region III)
Kent County
New Castle County
Sussex County
MARYLAND (Region III)
Cecil County
NEW JERSEY (Region II)
Atlantic County
Burlington County
Camden County
Cape May County
Cumberland County
Gloucester County
Mercer County
Ocean County
Salem County
PENNSYLVANIA (Region III)
Bucks County
Chester County
Delaware County
Montgomery County
Philadelphia County
 
  Pittsburgh-Beaver Valley, PA (Moderate - Nonattainment)
PENNSYLVANIA (Region III)
Allegheny County
Armstrong County
Beaver County
Butler County
Fayette County
Washington County
Westmoreland County
 
  Poughkeepsie, NY (Moderate - Nonattainment)
NEW YORK (Region II)
Dutchess County
Orange County
Putnam County
 
  Providence (all of RI), RI (Moderate - Nonattainment)
RHODE ISLAND (Region I)
Bristol County
Kent County
Newport County
Providence County
Washington County
 
  Riverside Co. (Coachella Valley), CA (Severe 15 - Nonattainment)
CALIFORNIA (Region IX)
Riverside County (P)
 
  Rochester, NY (Marginal - Nonattainment)
NEW YORK (Region II)
Genesee County
Livingston County
Monroe County
Ontario County
Orleans County
Wayne County
 
  Sacramento Metro, CA (Severe 15 - Nonattainment)
CALIFORNIA (Region IX)
El Dorado County (P)
Placer County (P)
Sacramento County
Solano County (P)
Sutter County (P)
Yolo County
 
  San Francisco Bay Area, CA (Marginal - Nonattainment)
CALIFORNIA (Region IX)
Alameda County
Contra Costa County
Marin County
Napa County
San Francisco County
San Mateo County
Santa Clara County
Solano County (P)
Sonoma County (P)
 
  San Joaquin Valley, CA (Extreme - Nonattainment)
CALIFORNIA (Region IX)
Fresno County
Kern County (P)
Kings County
Madera County
Merced County
San Joaquin County
Stanislaus County
Tulare County
 
  Sheboygan, WI (Moderate - Nonattainment)
WISCONSIN (Region V)
Sheboygan County
 
  Springfield (W. Mass), MA (Moderate - Nonattainment)
MASSACHUSETTS (Region I)
Berkshire County
Franklin County
Hampden County
Hampshire County
 
  Sutter Co (Sutter Buttes), CA (Marginal - Nonattainment)
CALIFORNIA (Region IX)
Sutter County (P)
 
  Ventura Co, CA (Serious - Nonattainment)
CALIFORNIA (Region IX)
Ventura County (P)
 
  Washington, DC-MD-VA (Moderate - Nonattainment)
DISTRICT OF COLUMBIA (Region III)
District of Columbia
MARYLAND (Region III)
Calvert County
Charles County
Frederick County
Montgomery County
Prince George's County
VIRGINIA (Region III)
Alexandria city
Arlington County
Fairfax County
Fairfax city
Falls Church city
Loudoun County
Manassas Park city
Manassas city
Prince William County

Notes:

Details about the designations and classifications of previous 1-hour ozone nonattainment and maintenance areas can be found here.

On June 8, 2007, the United States Court of Appeals vacated the Subpart 1 portion of the Phase 1 Rule (Court Order) (PDF). On May 14, 2012, the Former Subpart 1 nonattainment areas were classified under Subpart 2 (77 FR 28424 ) (PDF), effective June 13, 2012.


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