Site

State

PM AQI* (ug/m3)

Yuma Supersite

AZ

18

Chamizal C41

TX

14

Ascarate Park Southeast C37

TX

13

West Phoenix

AZ

12

Anthony

NM

12

Nogales Post Office

AZ

11

Durango Complex

AZ

11

Mesa - Brooks Reservoir

AZ

10

South Phoenix

AZ

10

Santa Teresa

NM

10