Site
State
PM AQI* (ug/m3)
Shreveport Airport
LA
14
Texarkana New Boston
TX
11
Houston North Loop C1052
10
Karnack C85
Houston North Wayside C405
ADEQ-DSR
AR
Westlake
9
Shuttlesworth
AL
CHICK.
DCNearRoad
DC
8