Site

State

PM AQI* (ug/m3)

Watertown

SD

12

Cedar Bluff

KS

11

WY/KC

KS

11

PECK

KS

11

Rangely, CO

CO

11

Research Farm

SD

10

Badlands

SD

10

KNI-Topeka

KS

10

Denver - NJH - 14th Ave. & ...

CO

9

Chanute

KS

9