Site

State

PM AQI* (ug/m3)

Watertown

SD

12

I25 Denver

CO

12

NCORE

NE

10

Grand Island DOT

NE

9

2912 Coffey

NE

9

UC1

SD

9

KNI-Topeka

KS

9

Rangely, CO

CO

8

LLCHD BAM

NE

8

Research Farm

SD

8