Site

State

PM AQI* (ug/m3)

Gillette SLAMS

WY

29

Credit Union

SD

28

Rangely, CO

CO

23

Pinedale Gaseous

WY

23

Kemmerer Mobile

WY

22

WIND CAVE

SD

21

Riverton Mobile

WY

20

Denver

CO

19

Badlands

SD

19

PECK

KS

18