State of the Air report.

The five cleanest cities are:

1. Bozeman, Montana
2. Casper, Wyoming
3. Kahului-Wailuku, Hawaii
4. Urban Honolulu, Hawaii
5. Burlington-South Burlington-Barre, Vermont

https://www.cbsnews.com/news/american-lung-association-air-report-cleanest-most-polluted-cities/

U.S.

Nearly half of U.S. kids are breathing unhealthy air, report says. These are the cleanest and most polluted cities.

By

Updated on: April 22, 2026 / 2:25 PM EDT / CBS News