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This article is from the WebMD News Archive

Top 25 Towns for Clean Air, Dirty Air

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Who's Got the Sootiest Air Year-Round?

The ALA lists the 25 U.S. metropolitan areas most polluted by year-round particle pollution (soot). Again, ties are listed with the same number:

1. Los Angeles-Long Beach-Riverside, Calif.
2. Bakersfield, Calif.
3. Pittsburgh-New Castle, Pa.
4. Visalia-Porterville, Calif.
5. Fresno-Madera, Calif.
6. Detroit-Warren-Flint, Mich.
7. Hanford-Corcoran, Calif.
8. Cleveland-Akron-Elyria, Ohio
9. Birmingham-Hoover-Cullman, Ala.
9. Atlanta-Sandy Springs-Gainesville, Ga.-Ala.
11. Chicago-Naperville-Michigan City, Ill.-Ind.-Wis.
12. Weirton-Steubenville, W.Va.-Ohio
13. York-Hanover-Gettysburg, Pa.
13. St. Louis-St. Charles-Farmington, Mo.-Ill.
13. Cincinnati-Middletown-Wilmington, Ohio-Ky.-Ind.
16. New York-Newark-Bridgeport, N.Y.-N.J.-Conn.-Pa.
16. Lancaster, Pa.
18. Merced, Calif.
18. Canton-Massillon, Ohio
20. Charleston, W.Va.
21. Washington-Baltimore-Northern Virginia, D.C.-Md.-Va.-W.Va.
22. Reading, Pa.
22. Hagerstown-Martinsburg, Md.-W.Va.
24. Indianapolis-Anderson-Columbus, Ind.
25. Louisville-Elizabethtown-Scottsburg, Ky.-Ind.

A separate list shows that the top five towns for ozone were all in California (Bakersfield, Los Angeles-Long Beach-Riverside, Visalia-Porterville, Fresno-Madera, and Merced).

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