Site

State

PM AQI* (ug/m3)

Hidden Valley

AZ

18

Ascarate Park Southeast C37

TX

10

Durango Complex

AZ

9

Socorro Hueco C49

TX

9

North Phoenix

AZ

8

Diablo

AZ

8

Yuma Supersite

AZ

8

Phoenix JLG Supersite

AZ

8

West Phoenix

AZ

7

Hobbs Jefferson

NM

7