Site
State
PM AQI* (ug/m3)
Hurst Road
AK
36
Portola
CA
33
A Street
27
Salmon PM2.5
ID
21
Harrisburg
PA
Libby Courthouse
MT
19
Albany
NY
18
Cave Junction Forest Service
OR
Bennington
VT
Omak-Colville Tribe
WA
17