An air quality index of 300 or higher is considered hazardous, and the record-breaking smoke AQI in Grand Portage reached 800 ...

Smoke from Canadian wildfires continues to plague the Upper Midwest and Great Lakes region, with multiple states under air ...

The ongoing Canadian wildfires have reportedly blanketed a third of the United States, affecting millions, with the National ...

Smoke from Canadian wildfires is beginning to worsen air quality in the eastern U.S. as several Midwestern states battle ...

Parts of central Pennsylvania are under a code orange air quality alert, but the Midwest is seeing bigger air quality ...

The smell of fire filled the air as thick smoke from wildfires in Canada blanketed part of the Midwest and created hazardous ...

Central Ohio's air quality index has lowered to moderate after smoke from Canadian wildfires has spread to some U.S. states.

Through parts of Minnesota and into Wisconsin, the air quality is deemed unhealthy for people and animals sensitive to ...

Cleaner air has moved into northwestern Minnesota where air-quality alerts have been dropped, but the remainder of the state ...

Air quality alerts and advisories have been issued in multiple states as Canadian wildfire smoke continues to spread.

Air quality is expected to reach the maroon air quality index category in northwest Minnesota, which is hazardous for ...