Top 10 U.S. Cities Most Polluted by Short-Term Particle Pollution:
1) Pittsburgh, Pa.
2) Los Angeles/Long Beach/Riverside, Calif.
3) Fresno/Madera, Calif.
4) Bakersfield, Calif.
5) Birmingham, Ala.
6) Logan, Utah
7) Salt Lake City, Utah
8) Sacramento, Calif.
9) Detroit, Mich.
10) Baltimore, Md./Washington, D.C./Northern Virginia.
Top 10 U.S. Cities Most Polluted by Year-Round Particle Pollution:
1) Los Angeles/Long Beach/Riverside, Calif.
2) Pittsburgh, Pa.
3) Bakersfield, Calif.
4) Birmingham, Ala.
5) Visalia/Porterville, Calif.
6) Atlanta, Ga.
7) Cincinnati, Ohio
8) Fresno/Madera, Calif.
9) Hanford/Corcoran, Calif.
10) Detroit, Mich.
