Site

State

PM AQI* (ug/m3)

John Day Dayton St

OR

15

Maple Falls-Azure Way

WA

12

Toppenish-Yakama Tribe

WA

11

Burns - Washington St.

OR

11

Sunnyside-S 16th

WA

10

Marysville-7th Ave

WA

10

Seattle-South Park

WA

10

Cave Junction Forest Service

OR

7

Clarkston-13th St

WA

7

Seattle-Duwamish

WA

7