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Carbon Monoxide (1971) Designated Area/State Information

Data is current as of November 30, 2018

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 0 0 0  
Maintenance 77 131 75,810,917  
Nonattainment and Maintenance 77 131 75,810,917  
Albuquerque, NM NM Maintenance C Moderate <= 12.7ppm 1 662,564 06
Anchorage, AK AK Maintenance A Serious 1 286,227 10
Atlantic City, NJ NJ Maintenance D Not Classified 1 44,944 02
Bakersfield, CA CA Maintenance D Not Classified 1 468,092 09
Baltimore, MD MD Maintenance C Moderate <= 12.7ppm 1 15,455 03
Billings, MT MT Maintenance D Not Classified 1 104,360 08
Boise-Northern Ada County, ID ID Maintenance D Not Classified 1 257,440 10
Boston, MA MA Maintenance C Moderate <= 12.7ppm 3 1,135,003 01
Burlington, NJ NJ Maintenance D Not Classified 1 10,993 02
Charlotte, NC NC Maintenance D Not Classified 1 919,628 04
Chico, CA CA Maintenance C Moderate <= 12.7ppm 1 86,963 09
Cleveland, OH OH Maintenance C Moderate <= 12.7ppm 1 1,280,122 05
Colorado Springs, CO CO Maintenance C Moderate <= 12.7ppm 2 555,742 08
Denver-Boulder, CO CO Maintenance A Serious 7 2,610,637 08
Detroit, MI MI Maintenance D Not Classified 3 1,382,239 05
Duluth, MN MN Maintenance C Moderate <= 12.7ppm 1 85,857 05
East Chicago, IN IN Maintenance D Not Classified 1 5,208 05
El Paso, TX TX Maintenance C Moderate <= 12.7ppm 1 73,100 06
Eugene-Springfield, OR OR Maintenance D Not Classified 1 234,972 10
Fairbanks, AK AK Maintenance A Serious 1 46,211 10
Fort Collins, CO CO Maintenance C Moderate <= 12.7ppm 1 170,639 08
Freehold, NJ NJ Maintenance D Not Classified 1 12,734 02
Fresno, CA CA Maintenance B Moderate > 12.7ppm 1 631,483 09
Grants Pass, OR OR Maintenance C Moderate <= 12.7ppm 1 22,449 10
Great Falls, MT MT Maintenance D Not Classified 1 57,573 08
Greeley, CO CO Maintenance D Not Classified 1 138,101 08
Hartford-New Britain-Middletown, CT CT Maintenance C Moderate <= 12.7ppm 4 1,106,678 01
Indianapolis, IN IN Maintenance D Not Classified 1 61,160 05
Klamath Falls, OR OR Maintenance C Moderate <= 12.7ppm 1 20,703 10
Lake Tahoe North Shore, CA CA Maintenance D Not Classified 1 16,132 09
Lake Tahoe South Shore, CA CA Maintenance C Moderate <= 12.7ppm 1 43,110 09
Lake Tahoe, NV NV Maintenance D Not Classified 3 33,259 09
Las Vegas, NV NV Maintenance A Serious 1 679,034 09
Longmont, CO CO Maintenance C Moderate <= 12.7ppm 2 86,558 08
Los Angeles-South Coast Air Basin, CA CA Maintenance A Serious 4 15,799,134 09
Lowell, MA MA Maintenance D Not Classified 1 106,519 01
Manchester, NH NH Maintenance D Not Classified 1 109,565 01
Medford, OR OR Maintenance C Moderate <= 12.7ppm 1 86,056 10
Memphis, TN TN Maintenance C Moderate <= 12.7ppm 1 927,644 04
Minneapolis-St. Paul, MN MN Maintenance C Moderate <= 12.7ppm 8 2,920,178 05
Missoula, MT MT Maintenance C Moderate <= 12.7ppm 1 59,733 08
Modesto, CA CA Maintenance C Moderate <= 12.7ppm 1 320,707 09
Morristown, NJ NJ Maintenance D Not Classified 1 21,955 02
Nashua, NH NH Maintenance D Not Classified 1 86,494 01
New Haven-Meriden-Waterbury, CT CT Maintenance D Not Classified 3 945,612 01
New York-N. New Jersey-Long Island, NY-NJ-CT CT Maintenance B Moderate > 12.7ppm 2 907,442 01
New York-N. New Jersey-Long Island, NY-NJ-CT NJ Maintenance B Moderate > 12.7ppm 5 3,159,966 02
New York-N. New Jersey-Long Island, NY-NJ-CT NY Maintenance B Moderate > 12.7ppm 7 10,463,778 02
Ogden, UT UT Maintenance C Moderate <= 12.7ppm 1 82,825 08
Penns Grove, NJ NJ Maintenance D Not Classified 1 5,201 02
Perth Amboy, NJ NJ Maintenance D Not Classified 1 49,645 02
Philadelphia-Camden Co, PA-NJ NJ Maintenance C Moderate <= 12.7ppm 1 513,657 02
Philadelphia-Camden Co, PA-NJ PA Maintenance C Moderate <= 12.7ppm 1 673,750 03
Phoenix, AZ AZ Maintenance A Serious 1 3,763,324 09
Pittsburgh, PA PA Maintenance D Not Classified 1 320,395 03
Portland, OR OR Maintenance C Moderate <= 12.7ppm 3 1,330,473 10
Provo, UT UT Maintenance B Moderate > 12.7ppm 1 166,596 08
Raleigh-Durham, NC NC Maintenance C Moderate <= 12.7ppm 2 1,168,580 04
Reno, NV NV Maintenance C Moderate <= 12.7ppm 1 221,743 09
Sacramento, CA CA Maintenance C Moderate <= 12.7ppm 3 1,530,116 09
Salem, OR OR Maintenance D Not Classified 2 156,100 10
Salt Lake City, UT UT Maintenance D Not Classified 1 186,440 08
San Diego, CA CA Maintenance C Moderate <= 12.7ppm 1 2,909,194 09
San Francisco-Oakland-San Jose, CA CA Maintenance C Moderate <= 12.7ppm 9 4,296,499 09
Seattle-Tacoma, WA WA Maintenance B Moderate > 12.7ppm 3 3,016,710 10
Somerville, NJ NJ Maintenance D Not Classified 1 15,557 02
Spokane, WA WA Maintenance A Serious 1 363,834 10
Springfield, MA MA Maintenance D Not Classified 1 153,060 01
St. Louis, MO MO Maintenance D Not Classified 2 1,227,527 07
Stockton, CA CA Maintenance C Moderate <= 12.7ppm 1 373,545 09
Syracuse, NY NY Maintenance C Moderate <= 12.7ppm 1 467,026 02
Toms River, NJ NJ Maintenance D Not Classified 1 10,667 02
Trenton, NJ NJ Maintenance D Not Classified 1 97,712 02
Tucson, AZ AZ Maintenance D Not Classified 1 595,314 09
Vancouver, WA WA Maintenance C Moderate <= 12.7ppm 1 400,271 10
Waltham, MA MA Maintenance D Not Classified 1 60,632 01
Washington, DC-MD-VA DC Maintenance C Moderate <= 12.7ppm 1 601,723 03
Washington, DC-MD-VA MD Maintenance C Moderate <= 12.7ppm 2 843,775 03
Washington, DC-MD-VA VA Maintenance C Moderate <= 12.7ppm 2 347,593 03
Winston-Salem, NC NC Maintenance C Moderate <= 12.7ppm 1 350,670 04
Worcester, MA MA Maintenance D Not Classified 1 181,045 01
Yakima, WA WA Maintenance D Not Classified 1 69,565 10

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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