Site

State

PM AQI* (ug/m3)

Denver

CO

12

KNI-Topeka

KS

10

Research Farm

SD

10

2912 Coffey

NE

9

Credit Union

SD

9

Watertown

SD

9

Greeley Hospital

CO

9

Rangely, CO

CO

9

Delta

CO

9

Globeville

CO

8