Site

State

PM AQI* (ug/m3)

Salmon PM2.5

ID

32

Portola

CA

28

The Dalles - Cherry Heights

OR

23

Lancaster DW

PA

21

Maple Falls-Azure Way

WA

20

Yosemite Village - Visitor ...

CA

20

Nogales Post Office

AZ

20

Fresno - Garland

CA

20

Phoenix JLG Supersite

AZ

19

Visalia - N. Church Street

CA

19