Site

State

PM AQI* (ug/m3)

Darrington-Fir St

WA

14

Burns - Washington St.

OR

12

Leavenworth-Evans St

WA

12

Maple Falls-Azure Way

WA

11

John Day Dayton St

OR

10

Twisp-Ewell St

WA

8

Port Angeles-E 5th St

WA

7

Seattle-Duwamish

WA

7

Pendleton - McKay Creek

OR

7

Cashmere Mobile

WA

7