Site

State

PM NowCast (ug/m3)

Maple Falls-Azure Way

WA

19

Portland - SE Lafayette

OR

18

Klamath Falls - Peterson Sc...

OR

17

Yacolt-Yacolt Rd

WA

14

Roseburg - Garden Valley Blvd.

OR

13

Beaverton - Highland Park S...

OR

12

Portland Near Road

OR

11

Seattle-10th & Weller

WA

10

Custer-Loomis (SO-AQS)

WA

10

Salem - State Hospital

OR

10