Site

State

PM AQI* (ug/m3)

Houston East C1

TX

15

Texarkana New Boston

TX

14

Hinds CC

MS

14

Brownsville C80

TM

13

Austin Webberville Road C171

TX

12

Austin North Interstate 35 ...

TX

12

Jackson NCORE

MS

11

Ft. Worth Northwest C13

TX

11

Rossville

GA

11

Calaveras Lake C59

TX

11