Site
State
PM AQI* (ug/m3)
Portola
CA
37
WY/KC
KS
36
Glenpool
OK
33
Maple Falls-Azure Way
WA
Copan
32
Tulsa
31
El Paso UTEP C12
TX
26
Oak Harbor-SW 6th (US)
24
Seeley Elementary School
MT
23
Hurst Road
AK