Site
State
PM AQI* (ug/m3)
Libby Courthouse
MT
20
Seeley Elementary School
19
Bismarck Residential
ND
13
St. Maries
ID
Lewiston
12
Lapwai
French Town - Beckwith
11
Rossiter Pump House
10
Fargo NW
Billlings Lockwood
9