Cleanest U.S. Cities, 2011

Each year the American Lung Association issues their "State of the Air" report. They track ozone pollution, short-term particle, and year-round particle pollution listed here. Here are the top 25 U.S. cities with the cleanest air.

Top 25 Cleanest U.S. Cities for Year-round Particle Pollution
#1: Cheyenne, WY
#2: Santa Fe-Espanola, NM
#3: Tucson, AZ
#4: Great Falls, MT
#4: Honolulu, HI
#6: Anchorage, AK
#7: Albuquerque, NM
#7: Amarillo, TX
#9: Redding, CA
#10: Salinas, CA
#11: Bismarck, ND
#12: Boise City-Nampa, ID
#13: Billings, MT
#14: Flagstaff, AZ
#14: Sarasota-Bradenton-Punta Gorda, FL
#14: Fort Collins-Loveland, CO
#14: Cape Coral-Fort Myers, FL
#14: Palm Bay-Melbourne-Titusville, FL
#19: Claremont-Lebanon, NH-VT
#20: Rapid City, SD
#20: Port St. Lucie-Sebastian-Vero Beach, FL
#22: Duluth, MN-WI
#23: Fargo-Wahpeton, ND-MN
#24: Burlington-South Burlington, VT
#24: Bangor, ME
#24: Orlando-Deltona-Daytona Beach, FL
Source: State of the Air: 2011, American Lung Association.