What is the most polluted city in America?



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    According to a report released in spring of this year, the three most polluted cities in the US are Pittsburgh in Pennsylvania, and Los Angeles and Bakersfield in California.  Exactly which of these is the most polluted depends on how you measure the pollution.  When looking at short-term particulate matter pollution, Pittsburgh claims first place.  If you examine particulate pollution in the long term however, Bakersfield is actually more polluted.  In terms of ozone – the main contributor to smog – Los Angeles is the nation’s most polluted city.

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