Site

State

PM AQI* (ug/m3)

Ascarate Park Southeast C37

TX

16

Tempe

AZ

15

West Phoenix

AZ

15

Hobbs Jefferson

NM

13

Chamizal C41

TX

13

Yuma Supersite

AZ

12

Nogales Post Office

AZ

11

Hidden Valley

AZ

11

Durango Complex

AZ

11

South Phoenix

AZ

11