Site

State

PM AQI* (ug/m3)

Hidden Valley

AZ

12

El Paso UTEP C12

TX

10

Ascarate Park Southeast C37

TX

10

Thirty Third

AZ

9

Socorro Hueco C49

TX

8

Casa Grande Downtown

AZ

8

Geronimo

AZ

8

Glendale Community College

AZ

8

Durango Complex

AZ

8

Yuma Supersite

AZ

7