Site

State

PM AQI* (ug/m3)

Socorro Hueco C49

TX

9

Hidden Valley

AZ

8

Ascarate Park Southeast C37

TX

8

El Paso UTEP C12

TX

8

Thirty Third

AZ

7

Jefferson

NM

7

Durango Complex

AZ

7

South Valley

NM

6

Hobbs Jefferson

NM

6

Eagle Pass C319

TX

6