Site

State

PM AQI* (ug/m3)

Greenville-ESC

SC

16

MATH & SCIENCE CTR

VA

14

United Ave

GA

13

Clemmons Middle

NC

13

Gainesville

GA

13

Burdens Creek

NC

12

Laredo C313

TX

12

ATHENS

TN

12

HICKORY

NC

12

Huntsville Old Airport

AL

12