Site

State

PM AQI* (ug/m3)

Ponca City

OK

47

Raymond-4th St

WA

37

Laredo C313

TX

33

Mission C43

TX

30

Columbus-Moore Rd

GA

28

San Antonio Old Hwy90 C677

TX

25

PECK

KS

25

WHlthDpt

KS

23

Brownsville C80

TM

22

San Antonio Northwest C23

TX

22

Von Ormy Highway 16

TX

22