Site

State

AQI*

Watertown

SD

11

KNI-Topeka

KS

11

Research Farm

SD

11

WY/KC

KS

11

Grand Junction - Powell Bui...

CO

11

Delta

CO

10

2912 Coffey

NE

10

UC1

SD

9

Sioux Falls

SD

9

LLCHD BAM

NE

9