Real Time AQI: Top Polluted Cities in United States

Kern County, California

USG Air Quality Index

AQI: 116
Fairbanks North Star, Alaska

Moderate Air Quality Index

AQI: 99
Boulder County, Colorado

Moderate Air Quality Index

AQI: 77
Yellowstone County, Montana

Moderate Air Quality Index

AQI: 76
Weld County, Colorado

Moderate Air Quality Index

AQI: 75
Marion County, Indiana

Moderate Air Quality Index

AQI: 73
Lemhi County, Idaho

Moderate Air Quality Index

AQI: 72
Douglas County, Colorado

Moderate Air Quality Index

AQI: 70
Hill County, Montana

Moderate Air Quality Index

AQI: 70
Denver County, Colorado

Moderate Air Quality Index

AQI: 69

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