Site

State

PM AQI* (ug/m3)

Yuma Supersite

AZ

16

South Valley

NM

12

Durango Complex

AZ

12

Hidden Valley

AZ

12

Amarillo Texas A&M C320

TX

12

Jefferson

NM

11

Nogales Post Office

AZ

11

Hobbs Jefferson

NM

10

Phoenix JLG Supersite

AZ

9

El Paso UTEP C12

TX

9