Site

State

PM AQI* (ug/m3)

Pagosa Springs

CO

82

Missoula

MT

54

Libby Courthouse

MT

35

Nipomo Mesa CDF

CA

22

Otay Mesa - Donovan

CA

21

Jerome Mack

NV

20

Seeley Elementary School

MT

20

Mesa 2 /Nipomo

CA

19

Sequoia National Park-River Rd

CA

18

Mira Loma - Van Buren

CA

17