Site

State

PM AQI* (ug/m3)

Copan

OK

28

Isla Blanca C323/C667

TX

25

Mission C43

TX

23

Chanute

KS

23

Mira Loma - Van Buren

CA

23

North Holywood

CA

22

Brownsville C80

TM

20

Glendora - Laurel

CA

20

Libby Courthouse

MT

20

WHlthDpt

KS

20