Site

State

PM AQI* (ug/m3)

Lake George-Lake George RS ...

CO

20

Watertown

SD

16

Research Farm

SD

15

UC1

SD

15

Sioux Falls

SD

15

Aberdeen

SD

13

KNI-Topeka

KS

11

Rangely, CO

CO

11

Grand Junction - Powell Bui...

CO

10

Globeville

CO

9