Site

State

PM AQI* (ug/m3)

Clifton

AZ

44

Ascarate Park Southeast C37

TX

25

Hidden Valley

AZ

24

Chamizal C41

TX

23

Las Cruces ED

NM

22

Socorro Hueco C49

TX

22

Anthony

NM

20

Thirty Third

AZ

19

El Paso UTEP C12

TX

19

Durango Complex

AZ

17