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

Page 6 of 19

25 .Norwich-New London, CT

PM 2.5 – 6.5

PM 10 – 30 

The serene city also known as “The Rose of New England” mostly experiences fluctuating air quality conditions, however, apart from average levels of PM 2.5 and PM10 , there are no pollutants that are a major problem in the city. 

Page 6 of 19