Site

State

PM AQI* (ug/m3)

Maple Falls-Azure Way

WA

33

John Day Dayton St

OR

30

Tacoma-L St

WA

21

Marysville-7th Ave

WA

20

Omak-Colville Tribe

WA

18

Tacoma-S 36th St

WA

18

Portland Lane Middle School

OR

16

Seattle-Duwamish

WA

16

La Pine Rural Fire Dept

OR

16

Turner - CJHS

OR

15