Site

State

PM AQI* (ug/m3)

Yuma Supersite

AZ

17

Rose Elementary

AZ

12

Hidden Valley

AZ

11

North Valley

NM

11

South Valley

NM

10

Casa Grande Downtown

AZ

10

Chamizal C41

TX

10

Jefferson

NM

10

Orange Grove

AZ

9

El Paso UTEP C12

TX

9