Site

State

PM AQI* (ug/m3)

Grand Junction - Powell Bui...

CO

9

Watertown

SD

7

Longmont

CO

6

Lander SLAMS

WY

6

Greeley Hospital

CO

6

LLCHD BAM

NE

6

Rangely, CO

CO

5

Heritage Park

KS

5

WY/KC

KS

5

2912 Coffey

NE

5