30 Cities With Best Air Quality in the U.S.

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28. Roanoke, VA

PM 2.5 – 6.6

PM 10 – ND 

AQI is a constant average in the city, however, some pollutants like Ozone and NO2 are present in the air. Even though air is low on pollutants, allergens like pollen may cause air related issues. 

Pixabay/Public Domain

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