Site

State

PM AQI* (ug/m3)

Madras - Westside School

OR

24

Prineville - Davidson Park

OR

21

Portland - SE Lafayette

OR

21

Portland Near Road

OR

20

John Day Dayton St

OR

19

Marysville-7th Ave

WA

18

Salem - State Hospital

OR

18

Albany - Calapooia School

OR

17

Corvallis - Circle Blvd.

OR

16

Burns - Washington St.

OR

16