Site

State

PM AQI* (ug/m3)

Nogales Post Office

AZ

11

Geronimo

AZ

11

West Phoenix

AZ

10

Durango Complex

AZ

10

South Phoenix

AZ

10

North Valley

NM

10

Orange Grove

AZ

9

Yuma Supersite

AZ

9

Farmington-1800 E 30th St

NM

8

South Valley

NM

8