top polluted us cities rankings

U.S. Cities Ranked by Air Pollution

Rank U.S. Cities Ranked by Air Pollution Average Annual Mean PM-10 Concentration (ug/m³)
1 Fresno – Madera, CA 69.2
2 Bakersfield, CA 66.8
3 Visalia – Porterville – Hanford, CA 64.9
4 Modesto – Merced – Stockton , CA 63.4
5 Los Angeles – Long Beach, CA 60.1
6 San Jose – San Francisco – Oakland, CA 58.8
7 Salt Lake City – Provo – Orem, UT 58.4
8 Logan, UT – ID 55.9
9 Fairbanks, AK 52.3
10 Pittsburgh – New Castle – Weirton, PA 50.5
11 Cleveland – Akron – Canton, OH 49.4
12 Riverside, CA 48.1
13 Phoenix, AZ 39.5
14 Spokane, WA 38.7
15 Reno, NV 38.5
16 Las Vegas, NV 38.3
17 Anaheim, CA 38.1
18 Medford, OR 37.9
19 St. Joseph, MO 37.6
20 Yuba City, CA 37.4
21 Steubenville, OH 36.6
22 Omaha, NE 35.5
23 Atlanta, GA 35.1
24 Chattanooga, TN 34.9
25 Paterson, NJ 34.8
26 San Diego, CA 34.8
27 Boise City, ID 34.0
28 Chicago, IL 33.7
29 Roanoke, VA 33.7
30 Philadelphia, PA 33.5
31 Detroit, MI 33.2
32 Yakima, WA 33.1
33 Chico, CA 33.1
34 Decatur, IL 33.0
35 Waterloo, IA 33.0
36 Knoxville, TN 32.6
37 Nashville, TN 32.4
38 Atlantic City, NJ 32.4
39 Laredo, TX 32.4
40 Houston, TX 31.9
41 Sacramento, CA 31.9
42 St. Louis, MO 31.8
43 Las Cruces, NM 31.7
44 Gadsden, AL 31.7
45 Mobile, AL 31.4
46 Newark, NJ 31.4
47 Providence, RI 31.4
48 Huntington, WV 31.4
49 Hamilton, OH 31.3
50 Lancaster, PA 31.0
  Top 10 Most Ozone Polluted Cities Air Quality Index (101-150)
1 Los Angeles – Long Beach, CA 133
2 Visalia – Porterville – Hanford, CA 131
3 Bakersfield, CA 129
4 Fresno – Madera, CA 128
5 Sacramento = Roseville, CA 128
6 Houston – The Woodlands, TX 122
7 Dallas – Fort Worth, TX 121
8 Modesto – Merced – Stockton , CA 117
9 Las Vegas – Henderson, NV 114
10 Phoenix – Mesa – Scottsdale, AZ 113
Rank Top 10 Cleanest Cities Average Annual Mean PM-10 Concentration (ug/m³)
1 Prescott, AZ 5.4
2 Farmington, NM 5.8
3 Cheyenne, WY 6.1
3 Casper, WY 6.1
5 Flagstaff, AZ 6.8
5 Duluth, MN - WI 6.8
6 Salinas, CA 7.5
6 Palm Bay - Melbourne - Titusville, FL 7.5
6 Kahului - Wailuku - Lahaina, HI 7.5
10 Rapid CIty - Spearfish, SD 8.3
10 Anchorage, AK 8.3
10 Bismarck, ND 8.3
Statistic & Data References
Sources: World Health Organization, American Lung Association
Date research was conducted: October 18th, 2015