Site

State

PM AQI* (ug/m3)

Near Road

RI

12

East St. Louis

IL

11

Padonia

MD

11

Waterbury

CT

11

Brockton

MA

11

E Providence

RI

10

Rockford

IL

10

Groton Fort Griswold

CT

10

Pocomoke City

MD

10

Princess Anne

MD

10