Site
State
PM AQI* (ug/m3)
Brawley - 220 Main Street
CA
38
Harrisville
UT
31
Yuma Supersite
AZ
Chanute
KS
30
KNI-Topeka
29
Rose Park
28
Erda
Utah Tech. Center
27
Grand Island DOT
NE
26
Inland Port