Site

State

PM AQI* (ug/m3)

PECK

KS

36

Ponca City

OK

26

WHlthDpt

KS

25

Yuma Supersite

AZ

23

Erda

UT

20

Brawley - 220 Main Street

CA

20

Herriman #3

UT

19

Union

OK

18

South Phoenix

AZ

18

Hobbs Jefferson

NM

17