Site

State

PM AQI* (ug/m3)

Lake George-Lake George RS ...

CO

21

WY/KC

KS

14

Paonia

CO

10

Pinedale Gaseous

WY

9

Aberdeen

SD

8

Watertown

SD

8

Rangely, CO

CO

7

UC1

SD

7

Sioux Falls

SD

6

Heritage Park

KS

6