Site

State

PM AQI* (ug/m3)

South Phoenix

AZ

22

Hidden Valley

AZ

20

Hobbs Jefferson

NM

15

Ascarate Park Southeast C37

TX

12

Eagle Pass C319

TX

11

Chamizal C41

TX

11

Yuma Supersite

AZ

10

Lubbock 12th Street

TX

10

Durango Complex

AZ

9

Socorro Hueco C49

TX

9