Site

State

PM AQI* (ug/m3)

Casa Grande Downtown

AZ

26

Ascarate Park Southeast C37

TX

24

South Valley

NM

22

Hidden Valley

AZ

21

El Paso UTEP C12

TX

21

Socorro Hueco C49

TX

21

Anthony

NM

19

Chamizal C41

TX

19

Yuma Supersite

AZ

19

Amarillo Texas A&M C320

TX

19