Site

State

PM AQI* (ug/m3)

MONTG

AL

24

Greenville-ESC

SC

23

San Antonio Old Hwy90 C677

TX

19

Laredo C313

TX

18

Von Ormy Highway 16

TX

16

Gainesville

GA

15

San Antonio Northwest C23

TX

15

Austin North Interstate 35 ...

TX

15

LEEDS

AL

15

DECATUR

AL

14