Site

State

PM AQI* (ug/m3)

Sisters Forest Service

OR

69

Bremerton-Spruce Ave

WA

7

Clarkston-13th St

WA

6

Omak-Colville Tribe

WA

6

Seattle-10th & Weller

WA

5

Winthrop-Chewuch Rd

WA

5

Seattle-South Park

WA

5

Maple Falls-Azure Way

WA

5

Port Angeles-E 5th St

WA

5

Spokane-Augusta Ave

WA

5