Site

State

PM AQI* (ug/m3)

Sioux Falls

SD

15

Grand Island DOT

NE

12

Watertown

SD

11

Credit Union

SD

10

NCORE

NE

10

UC1

SD

10

Cedar Bluff

KS

9

Globeville

CO

9

Research Farm

SD

9

2912 Coffey

NE

9