Site
State
PM AQI* (ug/m3)
Pinedale Gaseous
WY
39
Gillette SLAMS
35
Kemmerer Mobile
32
Rock Springs SLAMS
29
Riverton Mobile
27
WY/KC
KS
26
Lander SLAMS
25
Heritage Park
23
KNI-Topeka
22
South Pass
21