Site

State

PM AQI* (ug/m3)

Longmont

CO

12

Rangely, CO

CO

8

Pierre

SD

8

Adams-Birch

CO

7

Lander SLAMS

WY

7

Cheyenne NCore

WY

6

Yellow Brick Building

CO

4

Grand Junction - Powell Bui...

CO

4

Badlands

SD

4

Laramie I-80 Mobile

WY

4