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Asthma Health Center

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Air Pollution High in California Cities

American Lung Association Finds State Has High Ozone and Particulate Pollution

Cleanest Cities

Billings, Mont. led the list of cleanest U.S. cities for smog pollution. Alexandria, La., and Cheyenne, Wyo. made the top of the list for cleanest in terms of short-term and long-term particulate pollution.

Only Fargo-Wahpeton, N.D.-Minn., made the list of top 25 cleanest cities for all three measures of pollution, the report said.

Ozone: 25 Worst Cities

Here are the 25 worst metropolitan areas for ozone pollution:

1. Los Angeles-Long Beach-Riverside, Calif.

2. Bakersfield, Calif.

3. Visalia-Porterville, Calif.

4. Fresno-Madera, Calif.

5. Houston-Baytown-Huntsville, Texas

6. Sacramento-Arden-Arcade-Yuba City, Calif.-Nev.

7. Dallas-Fort Worth, Texas

8. Charlotte-Gastonia-Salisbury, N.C.-S.C.

9. Phoenix-Mesa-Scottsdale, Ariz.

10. El Centro, Calf.

11. Hanford-Corcoran, Calif.

12. Las Vegas-Paradise-Pahrump, Nev.

13. San Diego-Carlsbad-San Marcos, Calif.

14. Washington, D.C.-Baltimore-Northern Virginia, Md.-Va.-W.Va.

15. Cincinnati-Middletown-Wilmington, Ohio -Ky.- Ind.

16. Philadelphia-Camden-Vineland, Pa.-N.J.-Del.-Md.

17. St.Louis-St.Charles-Farmington, Mo.-Ill.

18. New York-Newark-Bridgeport, N.Y.-N.J.-Conn.-Pa.

19. Knoxville-Sevierville-La Follette, Tenn.

20. Birmingham-Hoover-Cullman, Ala.

21. Baton Rouge-Pierre Part, La.

22. Kansas City-Overland Park-Kansas City, Mo.-Kan.

23. Atlanta-Sandy Springs-Gainesville, Ga.-Ala.

24. Merced, Calif.

25. Memphis, Tenn.-Miss.-Ark.

Particle Pollution: 25 Worst Cities

Here are the 25 worst metropolitan areas for short-term particle pollution:

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-Idaho

9. Chicago-Naperville-Michigan City, Ill.-Ind.-Wis.

10. Detroit-Warren-Flint, Mich.

11. Indianapolis-Anderson-Columbus, Ind.

12. Visalia-Porterville, Calif.

13. Eugene-Springfield, Ore.

14. Washington, D.C.-Baltimore-Northern Virginia, Md.-Va.-W.Va

15. Hanford-Corcoran, Calif.

16. New York-Newark-Bridgeport, N.Y.-N.J.- Conn.- Pa.

17. Modesto, Calif.

18. Merced, Calif.

19. Louisville-Jefferson County-Elizabethtown-Scottsburg, Ky.-Ind.

20. Philadelphia-Camden-Vineland, Pa.-N.J.-Del-Md.

21. San Jose-San Francisco-Oakland, Calif.

22. Provo-Orem, Utah

23. San Diego-Carlsbad-San Marcos, Calif.

24. Harrisburg-Carlisle-Lebanon, Pa.

25. St. Louis-St. Charles-Farmington, Mo-Ill.

Cleanest Cities

Here are the cleanest cities for ozone pollution, in alphabetical order:

  • Billings, Mont.
  • Carson City, Nevada
  • Coeur d'Alene, Idaho
  • Fargo-Wahpeton, N.D.-Minn.
  • Honolulu
  • Laredo, Texas
  • Lincoln, Neb.
  • Port St. Lucie-Sebastian-Vero Beach, Fla.
  • Sioux Falls, S.D.

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