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Report: Most Americans Live in Unhealthy Air

A new report says more than half of Americans still live in areas with unhealthy air, despite progress in reducing smog.

The report released Wednesday by the American Lung Association is based on 2006-2008 figures. It says progress has been made in reducing particle pollution such as soot and dust, thanks to cleaner diesel engines and controls on coal-fired power plants.

The Los Angeles area continued to have the nation's worst ozone pollution.

The Phoenix-Mesa-Scottsdale area of Arizona had the worst year-round particle pollution.

Arizona Department of Environmental Quality Director Benjamin Grumbles said he questions the Phoenix results based on readings from an air quality monitor sitting nearly 40 miles from downtown Phoenix.

Most Polluted Cities by Ozone

1. Los Angeles-Long Beach (Calif.)-Riverside (Calif.)
2. Bakersfield, Calif.
3. Visalia (Calif.)-Porterville (Calif.)
4. Fresno (Calif.)-Madera (Calif.)
5. Sacramento (Calif.)-Arden-Arcade (Calif.)-Yuba City (Nev.)
6. Hanford (Calif.)-Corcoran (Calif.)
7. Houston-Baytown (Texas)-Huntsville (Texas)
8. San Diego-Carlsbad (Calif.)-San Marcos (Calif.)
9. San Luis Obispo (Calif.)-Paso Robles (Calif.)
10. Charlotte (N.C.)-Gastonia (N.C.)-Salisbury (S.C.)
11. Phoenix-Mesa (Ariz.)-Scottsdale (Ariz.)
12. Merced, Calif.
13. Dallas-Fort Worth (Texas)
14. Knoxville (Tenn.)-Sevierville (Tenn.)-La Follette (Tenn.)
15. El Centro, Calif.
T16. New York-Newark (N.J.)-Bridgeport (Conn.)
T16. Washington-Baltimore-Northern Virginia
18. Cincinnati-Middletown (Ky.)-Wilmington (Ind.)
T19. Atlanta-Sandy Springs (Ga.)-Gainesville (Ala.)
T19. Birmingham (Ala.)-Hoover (Ala.)-Cullman (Ala.)
21. Las Vegas-Paradise (Nev.)-Pahrump (Nev.)
T22. Modesto, Calif.
T22. Philadelphia-Camden (N.J.)-Vineland (N.J.)
24. Chico, Calif.
25. Baton Rouge (La.)-Pierre Part (La.)

Worst Cities by Year-Round Particle Pollution

1. Phoenix-Mesa (Ariz.)-Scottsdale (Ariz.)
2. Bakersfield, Calif.
T3. Los Angeles-Long Beach (Calif.)-Riverside (Calif.)
T3. Visalia-Porterville, Calif.
5. Pittsburgh-New Castle (Pa.)
6. Fresno-Madera, Calif.
7. Birmingham-Hoover-Cullman, Ala.
8. Hanford-Corcoran, Calif.
T9. Cincinnati-Middletown (Ky.)-Wilmington (Ind.)
T9. St. Louis-St. Charles (Mo.)-Farmington (Ill.)
T11. Charleston, W.Va.
T11. Detroit-Warren (Mich.)-Flint (Mich.)
T11. Weirton (W.Va.)-Steubenville (Ohio)
T14. Louisville (Ky.)-Jefferson County (Ky.)-Elizabethtown (Ky.)-Scottsburg (Ind.)
T14. Modesto, Calif.
T16. Atlanta-Sandy Springs (Ga.)-Gainesville (Ala.)
T16. Houston-Baytown (Texas)-Huntsville (Texas)
T16. Huntington (Ohio)-Ashland (Ohio)
T19. Cleveland-Akron (Ohio)-Elyria (Ohio)
T19. Macon (Ga.)-Warner Robins (Ga.)-Fort Valley (Ga.)
T21. Hagerstown (Md.)-Martinsburg (W.Va.)
T21. Knoxville (Tenn.)-Sevierville (Tenn.)-La Follette (Tenn.)
23. Augusta (Ga.)-Richmond County (S.C.)
24. Indianapolis-Anderson (Ind.)-Columbus (Ind.)
T25. Parkersburg (W.Va.)-Marietta (Ohio)
T25. York (Pa.)-Hanover (Pa.)-Gettysburg (Pa.)

Worst Cities by Short-Term Particle Pollution

1. Bakersfield, Calif.
2. Fresno (Calif.)-Madera (Calif.)
3. Pittsburgh-New Castle (Pa.)
4. Los Angeles-Long Beach (Calif.)-Riverside (Calif.)
5. Birmingham (Ala.)-Hoover (Ala.)-Cullman (Ala.)
6. Sacramento (Calif.)-Arden-Arcade (Calif.)-Yuba City (Nev.)
7. Salt Lake City-Ogden (Utah)-Clearfield (Utah)
8. Visalia (Calif.)-Porterville (Calif.)
9. Modesto, Calif.
10. Hanford (Calif.)-Corcoran (Calif.)
11. Merced, Calif.
12. Philadelphia-Camden (N.J.)-Vineland (N.J.)
13. Provo (Utah)-Orem (Utah)
14. Phoenix-Mesa (Ariz.)-Scottsdale (Ariz.)
15. Stockton, Calif.
16. Chicago-Naperville (Ill.)-Michigan City (Ind.)
17. San Diego-Carlsbad (Calif.)-San Marcos (Calif.)
T18. Washington-Baltimore-Northern Virginia
T18. New York-Newark (N.J.)-Bridgeport (Conn.)
T18. Logan, Utah
21. Eugene (Ore.)-Springfield (Ore.)
22. Harrisburg (Pa.)-Carlisle (Pa.)-Lebanon (Pa.)
T23. San Jose-San Francisco-Oakland (Calif.)
T23. Indianapolis-Anderson (Ind.)-Columbus (Ind.)
T23. Allentown (Pa.)-Bethlehem (Pa.)-Easton (Pa.)

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