Site

State

PM AQI* (ug/m3)

WY/KC

KS

11

LLCHD BAM

NE

11

Cedar Bluff

KS

10

KNI-Topeka

KS

9

Watertown

SD

8

Rangely, CO

CO

7

NCORE

NE

6

Denver

CO

6

South Pass

WY

6

Sioux Falls

SD

6