Site

State

PM AQI* (ug/m3)

Hidden Valley

AZ

17

Nogales Post Office

AZ

16

Ascarate Park Southeast C37

TX

15

Yuma Supersite

AZ

13

Santa Fe-705 Alta Vista St

NM

11

Socorro Hueco C49

TX

10

Jefferson

NM

9

South Valley

NM

9

Lubbock 12th Street

TX

9

Odessa Gonzales C1014

TX

9