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PM-2.5 (1997) Designated Area/State Information

Data is current as of May 31, 2019

PM-2.5 (1997) Notes

* The 1997 Primary Annual PM-2.5 NAAQS (level of 15 µg/m3) is revoked in attainment and maintenance areas for that NAAQS. For additional information see the PM-2.5 NAAQS SIP Requirements Final Rule, effective October 24, 2016. (81 FR 58009)

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
 
Click underlined column heading to change report order.
click area name for state/county list
click for
Classification history
 
Total
Areas

Total
Counties
Total
Population
(2010)
 
Nonattainment 4 14 19,588,718  
Maintenance 35 195 74,527,359  
Nonattainment and Maintenance 39 208 94,116,077  
Atlanta, GA GA Maintenance * B Moderate 22 5,265,299 04
Baltimore, MD MD Maintenance * B Moderate 6 2,662,691 03
Birmingham, AL AL Maintenance * C Former Subpart 1 3 857,680 04
Canton-Massillon, OH OH Maintenance * C Former Subpart 1 1 375,586 05
Charleston, WV WV Maintenance * C Former Subpart 1 2 248,549 03
Chattanooga, TN-GA-AL AL Maintenance * B Moderate 1 1,760 04
Chattanooga, TN-GA-AL GA Maintenance * B Moderate 2 132,698 04
Chattanooga, TN-GA-AL TN Maintenance * B Moderate 1 336,463 04
Chicago-Gary-Lake County, IL-IN IL Maintenance * C Former Subpart 1 8 8,389,546 05
Chicago-Gary-Lake County, IL-IN IN Maintenance * C Former Subpart 1 2 660,348 05
Cincinnati-Hamilton, OH-KY-IN IN Maintenance * C Former Subpart 1 1 13,516 05
Cincinnati-Hamilton, OH-KY-IN KY Maintenance * C Former Subpart 1 3 368,867 04
Cincinnati-Hamilton, OH-KY-IN OH Maintenance * C Former Subpart 1 4 1,580,560 05
Cleveland-Akron-Lorain, OH OH Maintenance * C Former Subpart 1 7 2,709,565 05
Columbus, OH OH Maintenance * C Former Subpart 1 5 1,651,811 05
Dayton-Springfield, OH OH Maintenance * C Former Subpart 1 3 835,059 05
Detroit-Ann Arbor, MI MI Maintenance * C Former Subpart 1 7 4,704,743 05
Evansville, IN IN Maintenance * C Former Subpart 1 6 296,995 05
Greensboro-Winston Salem-High Point, NC NC Maintenance * C Former Subpart 1 2 651,284 04
Harrisburg-Lebanon-Carlisle, PA PA Maintenance * B Moderate 3 637,074 03
Hickory-Morganton-Lenoir, NC NC Maintenance * C Former Subpart 1 1 154,358 04
Huntington-Ashland, WV-KY-OH KY Maintenance * C Former Subpart 1 2 52,397 04
Huntington-Ashland, WV-KY-OH OH Maintenance * C Former Subpart 1 4 149,579 05
Huntington-Ashland, WV-KY-OH WV Maintenance * C Former Subpart 1 3 141,206 03
Indianapolis, IN IN Maintenance * C Former Subpart 1 5 1,531,958 05
Johnstown, PA PA Maintenance * B Moderate 2 156,923 03
Knoxville, TN TN Maintenance * B Moderate 5 681,523 04
Lancaster, PA PA Maintenance * B Moderate 1 519,445 03
Libby, MT MT Nonattainment B Moderate 1 9,429 08
Liberty-Clairton, PA PA Nonattainment B Moderate 1 20,789 03
Los Angeles-South Coast Air Basin, CA CA Nonattainment B Moderate 4 15,716,335 09
Louisville, KY-IN IN Maintenance * B Moderate 3 203,489 05
Louisville, KY-IN KY Maintenance * B Moderate 2 815,415 04
Macon, GA GA Maintenance * C Former Subpart 1 2 158,123 04
Martinsburg, WV-Hagerstown, MD MD Maintenance * B Moderate 1 147,430 03
Martinsburg, WV-Hagerstown, MD WV Maintenance * B Moderate 1 104,169 03
New York-N. New Jersey-Long Island, NY-NJ-CT CT Maintenance * C Former Subpart 1 2 1,779,306 01
New York-N. New Jersey-Long Island, NY-NJ-CT NJ Maintenance * C Former Subpart 1 10 5,983,547 02
New York-N. New Jersey-Long Island, NY-NJ-CT NY Maintenance * C Former Subpart 1 10 12,641,628 02
Parkersburg-Marietta, WV-OH OH Maintenance * C Former Subpart 1 1 61,778 05
Parkersburg-Marietta, WV-OH WV Maintenance * C Former Subpart 1 2 88,538 03
Philadelphia-Wilmington, PA-NJ-DE DE Maintenance * B Moderate 1 538,479 03
Philadelphia-Wilmington, PA-NJ-DE NJ Maintenance * C Former Subpart 1 3 1,250,679 02
Philadelphia-Wilmington, PA-NJ-DE PA Maintenance * B Moderate 5 4,008,994 03
Pittsburgh-Beaver Valley, PA PA Maintenance * B Moderate 8 2,142,981 03
Reading, PA PA Maintenance * B Moderate 1 411,442 03
Rome, GA GA Maintenance * C Former Subpart 1 1 96,317 04
San Joaquin Valley, CA CA Nonattainment A Serious 8 3,842,165 09
St. Louis, MO-IL IL Maintenance * B Moderate 4 573,748 05
St. Louis, MO-IL MO Maintenance * B Moderate 5 1,998,958 07
Steubenville-Weirton, OH-WV OH Maintenance * C Former Subpart 1 1 69,709 05
Steubenville-Weirton, OH-WV WV Maintenance * C Former Subpart 1 2 54,745 03
Washington, DC-MD-VA DC Maintenance * B Moderate 1 601,723 03
Washington, DC-MD-VA MD Maintenance * B Moderate 4 2,215,133 03
Washington, DC-MD-VA VA Maintenance * B Moderate 9 2,230,623 03
Wheeling, WV-OH OH Maintenance * C Former Subpart 1 1 70,400 05
Wheeling, WV-OH WV Maintenance * C Former Subpart 1 2 77,550 03
York, PA PA Maintenance * B Moderate 1 434,972 03

PM-2.5 (1997) Notes

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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