Real Time AQI: Top Polluted Cities in United States

Essex County, Massachusetts

USG Air Quality Index

AQI: 127
Pennington County, South Dakota

USG Air Quality Index

AQI: 116
Trego County, Kansas

Moderate Air Quality Index

AQI: 91
Colusa County, California

Moderate Air Quality Index

AQI: 84
Grafton County, New Hampshire

Moderate Air Quality Index

AQI: 82
Roane County, Tennessee

Moderate Air Quality Index

AQI: 80
Lincoln County, Montana

Moderate Air Quality Index

AQI: 80
Sherman County, Kansas

Moderate Air Quality Index

AQI: 79
Santa Fe County, New Mexico

Moderate Air Quality Index

AQI: 78
Maricopa County, Arizona

Moderate Air Quality Index

AQI: 74

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