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The 10 Worst Places to Breathe in the U.S.

Written by Maya Cohen and Medically Reviewed by Scott Pearlman, M.D.

The Official Website of the City of Los Angeles

2. Los Angeles, CA

The city of angels is in dire need of fresher wind beneath those celestial wings. LA is one of the dirtiest places in the country, and we’re not referring to the frequent scandals. Although La La Land is first on the list of highest ozone levels, it looks like efforts on the part of celebs and residents to go green have made a difference: the numbers have improved every year since the beginning of the century. If Tinseltown keeps this up, the list of most polluted cities will soon have to Say Goodbye to Hollywood.