Site
State
PM AQI* (ug/m3)
Pagosa Springs
CO
38
Upland
CA
33
Portola
Jeffersonville - Bates-Bowy...
IN
MMCA81027
32
Liberty (SAHS)
PA
31
Happy Camp-63822 CA-96
MMCA81024
Riverside - Rubidoux
Cave In Rock-Park Ave
IL
30