4. Los Angeles – Long Beach, CA
The metro area of Los Angeles and Long Beach is one of the places with the worst air quality. The area went from 11th place in 2016 to 5th place in 2017 for particle-pollution and for the same period it remained in the first place as the most ozone-polluted area in the whole USA. This metro area is too crowded and the population of more than 18.67 million people definitely deserves better quality of air.
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And now, let’s see the top three cities with the worst air pollution in the US.
