Site

State

PM AQI* (ug/m3)

Hidden Valley

AZ

21

Eagle Pass C319

TX

19

Anthony

NM

19

Eastwood

AZ

18

South Phoenix

AZ

14

Angel Fire-Flamingo Ln

NM

13

Grand Canyon ozone bench

AZ

13

Children's Park Site

AZ

12

Nogales Post Office

AZ

12

Socorro-106 Neel Ave

NM

11