What US state has the cleanest air?


What US state has the cleanest air? The state of Hawaii boasts the cleanest average air in the entire U.S., at an AQI of 21.2. Even Hawaii's biggest city, Honolulu, ranks on the cleanest cities for lists for ozone, short-term particle pollution, and year-round particle pollution.


What are the top 3 cleanest states?

The cleanest states
  1. 1. California Cleanliness Score: 7.36. California is the cleanest state overall with a cleanliness score of 7.36. ...
  2. HawaiiCleanliness Score: 6.94. Hawaii claims second place with a cleanliness score of 6.94. ...
  3. WashingtonCleanliness Score: 6.40.


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