Site

State

PM AQI* (ug/m3)

San Antonio Old Hwy90 C677

TX

21

Austin Webberville Road C171

TX

21

CHICK.

AL

17

Jackson NCORE

MS

17

Hattiesburg

MS

17

Lafayette

LA

16

Madisonville

LA

16

Ft. Worth Northwest C13

TX

16

ADEQ-DSR

AR

15

Austin North Interstate 35 ...

TX

15