Site

State

PM AQI* (ug/m3)

Ascarate Park Southeast C37

TX

15

South Phoenix

AZ

10

El Paso UTEP C12

TX

10

Durango Complex

AZ

9

West Phoenix

AZ

9

Nogales Post Office

AZ

8

Socorro Hueco C49

TX

8

South Valley

NM

8

Yuma Supersite

AZ

7

Anthony

NM

7