Best & Worst Cities for Ozone Pollution

Best and Worst Cities For Ozone Pollution Infographic

This information has been reviewed and approved by the American Lung Association, 2018.


Summary: Best and Worst Cities for Ozone Pollution


Cleanest Ozone Cities

  1. Bellingham, WA
  2. Burlington, VT
  3. Casper, WY
  4. Honolulu, HI
  5. Palm Bay, FL
  6. Wilmington, NC
  7. Bangor, ME
  8. Bowling Green, KY
  9. Dothan, AL
  10. Eau Claire, WI
  11. Fayetteville, NC
  12. Fayetteville, AR
  13. Florence, SC
  14. Fort Smith, AR
  15. Gadsden, AL
  16. Greenville, NC
  17. La Crosse, WI
  18. Lafayette, LA
  19. McAllen, TX
  20. Monroe, LA
  21. Rome, GA
  22. Springfield, MO
  23. Tuscaloosa, AL
  24. Waterloo, IA
  25. Cheyenne, WY
  26. Salinas, CA


Most Ozone Polluted Cities

  1. Los Angeles, CA
  2. Bakersfield, CA
  3. Visalia, CA
  4. Fresno, CA
  5. Sacramento, CA
  6. San Diego, CA
  7. Modesto, CA
  8. Phoenix, AZ
  9. Redding, CA
  10. New York, NY
  11. Houston, TX
  12. Las Vegas, NV
  13. San Jose, CA
  14. Denver, CO
  15. El Centro, CA
  16. Dallas, TX
  17. Washington, DC
  18. Salt Lake City, UT
  19. Fort Collins, CO
  20. Hartford, CT
  21. Chico, CA
  22. Chicago, IL
  23. Atlanta, GA
  24. Sheboygan, WI
  25. Philadelphia, PA
Source: American Lung Association 2018


Warmer weather increases ground-level ozone pollution. Here's what you can do to breathe easier.


Protect Yourself from Ozone Pollution

  • Watch local air quality advisories.
  • Take medications exactly as prescribed.
  • Stay indoors as much as possible and close windows.
  • Use circulate setting on home thermostat to keep polluted air out.
  • Avoid outdoor exercise during high pollution days.
  • Call your doctor if symptoms increase or if you need more medication.


More Information on Pollution

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