Site

State

PM AQI* (ug/m3)

Seiling

OK

15

Thomas Jefferson School C303

TX

14

Huntsville Old Airport

AL

14

NO. BHAM

AL

13

Gainesville

GA

13

Westlake

LA

13

Shuttlesworth

AL

13

TK Gregg

SC

13

Denton Airport South C56

TX

13

McDonough

GA

12