Site

State

PM AQI* (ug/m3)

Portola

CA

38

MOUNDSVILLE

WV

30

San Antonio Old Hwy90 C677

TX

28

Lancaster DW

PA

28

NEW

PA

27

Bishop Paiute Tribe-CA

CA

25

Grants Pass - Parkside School

OR

24

Ashland Fire Dept

OR

24

Von Ormy Highway 16

TX

23

Arendtsville

PA

23