Which cities are the most polluted?

The AP’s Environmental News Service recently updated its list of the 10 most polluted cities in the United States.

The list includes a dozen major metros, and includes some smaller metros as well.

The city of Atlanta, for example, ranked No. 8 on the list.

The AP ranked Atlanta No. 12 on the top 10 polluted metros.

Here are the 10 cities with the most pollution:Atlanta (Atlanta, Georgia) – 11.9%Houston (Houston, Texas) – 10.3%Detroit (Detroit, Michigan) – 9.9%,Columbus (Columbus, Ohio) – 8.9%;San Diego (San Diego, California) – 7.9%-San Francisco (San Francisco, California, metro area) – 6.5%-Washington, D.C. (Washington, DC) – 5.4%San Jose (San Jose, California), San Diego (Los Angeles) – 4.6%Atlanta ( Atlanta, Georgia ) – 11%San Diego – 10%Columbus – 10%-Washington – 9%Seattle – 9%-Philadelphia – 8%Philadelphia ( Philadelphia, Pennsylvania, metropolitan area) 5%San Francisco – 8%-Chicago – 7%Boston – 7%-New York City – 6%New York ( New York, New York ) – 5%Portland, Oregon – 4%Portland ( Portland, Oregon ) – 4%-Denver – 3%Denver ( Denver, Colorado ) – 3%-Chicago ( Chicago, Illinois, metropolitan region ) – 2%Dallas – 2%-Boston – 1%Houston – 1%-Seattle – 1%.

Sources: Associated Press, Reuters