Site

State

PM AQI* (ug/m3)

South Phoenix

AZ

32

West Phoenix

AZ

30

Nogales Post Office

AZ

25

Phoenix JLG Supersite

AZ

23

Tempe

AZ

21

Durango Complex

AZ

20

North Valley

NM

20

Chamizal C41

TX

16

South Valley

NM

16

Geronimo

AZ

15