Site

State

PM AQI* (ug/m3)

Bakersfield - Golden State ...

CA

76

Libby Courthouse

MT

39

Sequoia and Kings Canyon - ...

CA

26

Columbia

NJ

25

Portola

CA

22

Hidden Valley

AZ

22

Liberty (SAHS)

PA

21

DEARBORN

MI

19

Santa Clarita

CA

19

Mira Loma - Van Buren

CA

18