Site

State

PM AQI* (ug/m3)

2912 Coffey

NE

10

Grand Island DOT

NE

10

NCORE

NE

9

Rangely, CO

CO

9

Research Farm

SD

9

Watertown

SD

8

Globeville

CO

8

WY/KC

KS

7

SF-USD

SD

7

Greeley Hospital

CO

7