Site

State

PM AQI* (ug/m3)

Houston East C1

TX

16

Calaveras Lake C59

TX

15

Tallahassee Community College

FL

14

Laredo C313

TX

14

Clinton C403

TX

13

Mission C43

TX

13

Chalmette Vista

LA

13

San Antonio IH35 C1069

TX

13

Austin Webberville Road C171

TX

12

Brownsville C80

TM

12