Site

State

PM AQI* (ug/m3)

United Ave

GA

22

Cape Romain

SC

17

LOCKLAND

TN

15

Charleston Public Works

SC

14

Huntsville Old Airport

AL

14

W OWEN SCH

NC

14

JOHNSTON

NC

14

Mammoth Cave NP

KY

13

North OKC

OK

13

Rome

GA

13