Site

State

PM AQI* (ug/m3)

WY/KC

KS

14

KNI-Topeka

KS

13

Globeville

CO

13

Aberdeen

SD

12

Pierre

SD

11

2912 Coffey

NE

10

Longmont

CO

10

Sioux Falls

SD

10

Heritage Park

KS

10

Boulder - CU - 2102 Athens St.

CO

9