Site

State

PM AQI* (ug/m3)

Hidden Valley

AZ

18

Mesa-1528 S Gaylord

AZ

16

Yuma Supersite

AZ

9

Geronimo

AZ

9

Thirty Third

AZ

8

Casa Grande Downtown

AZ

8

Rose Elementary

AZ

8

El Paso UTEP C12

TX

7

Mesa - Brooks Reservoir

AZ

7

Ascarate Park Southeast C37

TX

7