Site

State

PM AQI* (ug/m3)

Thirty Third

AZ

19

Nogales Post Office

AZ

18

Durango Complex

AZ

16

West Phoenix

AZ

15

South Phoenix

AZ

15

Phoenix JLG Supersite

AZ

12

Hidden Valley

AZ

11

Jefferson

NM

11

El Paso UTEP C12

TX

10

Santa Teresa

NM

10