Site

State

PM AQI* (ug/m3)

Hidden Valley

AZ

39

Grand Canyon ozone bench

AZ

14

Ascarate Park Southeast C37

TX

11

North Valley

NM

9

Anthony

NM

9

Thirty Third

AZ

8

Geronimo

AZ

8

Jefferson

NM

8

El Paso UTEP C12

TX

8

South Valley

NM

8