Site

State

PM AQI* (ug/m3)

Augusta

GA

48

Mission C43

TX

22

Laredo C313

TX

20

San Antonio Old Hwy90 C677

TX

19

Von Ormy Highway 16

TX

18

HICKORY

NC

16

San Antonio IH35 C1069

TX

15

Calaveras Lake C59

TX

15

HATTIEAVEN

NC

15

Brownsville C80

TM

15