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Grades 2-3

Cities with Dirtiest Air and Cities with Cleanest Air

Pollution from traffic is a major cause of unhealthy air. Here are the U.S. cities with the dirtiest air, and the cities where people can breathe easy.

Cities with Dirtiest Air

1. Los Angeles, CA

2. Pittsburgh, PA

3. Bakersfield, CA

4. Birmingham, AL

5. Detroit, MI

Cities with Cleanest Air

1. Cheyenne, WY

2. Santa Fe, NM

3. Honolulu, HI

4. Great Falls, MT

5. Farmington, NM

SOURCE: AMERICAN LUNG ASSOCIATION, STATE OF THE AIR REPORT, 2007

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