1. Cheyenne, Wyo.
2. Santa Fe-Espanola, N.M.
3. Honolulu, Hawaii
4. Great Falls, Mont.
4. Flagstaff, Ariz.
6. Farmington, N.M.
6. Anchorage, Alaska
8. Tucson, Ariz.
9. Bismarck, N.D.
9. Salinas, Calif.
Cleanest U.S. Cities for Ozone Air Pollution
*Cities below had equal scores.
Billings, Mont.
Carson City, Nev.
Coeur D'Alene, Idaho
Fargo-Wahpeton, N.D.-Minn.
Honolulu, Hawaii
Laredo, Texas
Lincoln, Neb.
Port St. Lucie-Sebastian-Vero Beach, Fla.
Sioux Falls, S.D.
Nation's Most Polluted Cities
10 U.S. Cities Most Polluted by Short-term Particle Pollution (24 Hour PM2.5)
*Cities listed in rank order. Duplicate position numbers indicate ties.
1. Pittsburgh-New Castle, Pa.
2. Fresno-Madera, Calif.
3. Bakersfield, Calif.
4. Los Angeles-Long Beach-Riverside, Calif.
5. Birmingham-Hoover-Cullman, Ala.
6. Salt Lake City-Ogden-Clearfield, Utah
7. Sacramento-Arden-Arcade-Yuba City, Calif.-Nev.
8. Logan, Utah
9. Chicago-Naperville-Michigan City, Ill.-Ind.-Wis.
9. Detroit-Warren-Flint, Mich.
10 U.S. Cities Most Polluted by Year-Round Particle Pollution (Annual PM2.5)
*Cities listed in rank order.
1. Bakersfield, Calif.
2. Pittsburgh-New Castle, Pa.
3. Los Angeles-Long Beach-Riverside, Calif.
4. Visalia-Porterville, Calif.
5. Birmingham-Hoover-Cullman, Ala.
6. Hanford-Corcoran, Calif.
7. Fresno-Madera, Calif.
8. Cincinnati-Middletown-Wilmington, Ohio-Ky.-Ind.
9. Detroit-Warren-Flint, Mich.<
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