Chicago Again Gets An F From Lung Association For Poor Air QualityThe Chicago metropolitan area ranked 14th worst in the nation for 24-hour particle pollution – also known as soot – and 20th worst for high ozone levels – also known as smog – and annual particle pollution, according to the Lung Association.
Counties Ranked For Ozone, Particle PollutionThere is good news and bad news in the American Lung Association's annual State of the Air report card.

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