Site

State

PM AQI* (ug/m3)

Denver

CO

1503

Garden

AK

78

Unit153

MT

26

San Antonio Old Hwy90 C677

TX

25

Austin North Interstate 35 ...

TX

23

San Antonio IH35 C1069

TX

23

Butte (Harrison Court)

AK

23

San Antonio Northwest C23

TX

22

Austin Webberville Road C171

TX

22

Austin Northwest C3

TX

21