Site

State

PM AQI* (ug/m3)

Brawley - 220 Main Street

CA

38

Harrisville

UT

31

Yuma Supersite

AZ

31

Chanute

KS

30

KNI-Topeka

KS

29

Rose Park

UT

28

Erda

UT

28

Utah Tech. Center

UT

27

Grand Island DOT

NE

26

Inland Port

UT

26