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

An air quality map shows conditions improving in the U.S. on Friday as smoke from the Canadian wildfires subsides.

An air quality alert has been issued for the entirety of Minnesota on Sunday as Canadian wildfire smoke continues to impact ...

From Sunday to Tuesday, smoke in northwest Canada swirled into the northern Plains, giving Minnesota some of the worst air ...

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

Online map tools and resources let you track the Canadian wildfires and monitor poor air-quality conditions, which are ...

Minnesota authorities warned of unhealthy levels of exposure to particles from wildfires. Symptoms include shortness of ...

The Minnesota Pollution Control Agency says additional air quality alerts are likely needed for much of Minnesota this ...

The Minnesota Pollution Control Agency issued an air quality alert for much of state through Wednesday as smoke from ...

It smells like a bonfire outside Tuesday due to another day of poor air quality caused by smoke from the wildfires in Canada.

With 174 active wildfires burning across Canada, several U.S. states are under air quality alerts due to the traveling smoke ...

States across the border issued air advisories about particulate pollution that are expected to last for several days.