Site

State

PM AQI* (ug/m3)

Yuma Supersite

AZ

12

El Paso UTEP C12

TX

9

Phoenix JLG Supersite

AZ

9

Del Norte

NM

8

Hidden Valley

AZ

8

Anthony

NM

7

Socorro Hueco C49

TX

7

South Valley

NM

7

Hobbs Jefferson

NM

7

Alamo Lake

AZ

7