CostTrek

★ Best places to live

Cities with the cleanest air in North America

Breathe easy — cities ranked by air quality, lowest pollution first.

The Cities with the cleanest air in North America, ranked by Pollution across 29 cities we track in the region. Seattle leads with 30/100, ahead of Vancouver and Boston.

By region🌍 Cities with the cleanest airEuropeAsia
RankPollution
  1. 1SeattleUnited States30/100
  2. 2VancouverCanada30/100
  3. 3BostonUnited States35/100
  4. 4PortlandUnited States35/100
  5. 5MinneapolisUnited States35/100
  6. 6MontrealCanada35/100
  7. 7San FranciscoUnited States40/100
  8. 8San DiegoUnited States40/100
  9. 9WashingtonUnited States40/100
  10. 10AustinUnited States40/100
  11. 11NashvilleUnited States40/100
  12. 12CharlotteUnited States40/100
  13. 13ColumbusUnited States40/100
  14. 14TorontoCanada40/100
  15. 15ChicagoUnited States45/100
  16. 16MiamiUnited States45/100
  17. 17DallasUnited States45/100
  18. 18DenverUnited States45/100
  19. 19AtlantaUnited States45/100
  20. 20PhiladelphiaUnited States45/100
  21. 21San AntonioUnited States45/100
  22. 22HoustonUnited States50/100
  23. 23Las VegasUnited States50/100
  24. 24DetroitUnited States50/100
  25. 25New YorkUnited States55/100
  26. 26PhoenixUnited States55/100
  27. 27GuadalajaraMexico58/100
  28. 28Los AngelesUnited States60/100
  29. 29Mexico CityMexico75/100
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? Frequently asked questions

Which cities top this ranking?

Seattle leads at 30/100, followed by Vancouver and Boston. The full ranking of 29 cities is listed above.

How is this ranking calculated?

We sort all 29 cities in our index by Pollution. Figures are calibrated estimates, refreshed as we expand coverage — a practical guide, not official statistics.

Can I compare these cities in detail?

Yes. Open any city for its cost of living, rent, taxes, visas and quality of life, or use CostTrek’s side-by-side comparison to weigh two cities against each other.