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

Wildfires scorching several Canadian provinces have driven at least 33,400 people from their homes, with smoke now reaching ...

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

Smoke from raging wildfires in Canada is worsening air quality in some U.S. states. But will Greater Cincinnati be affected?

Smoke from wildfires raging in Canada has drifted into the United States, affecting air quality as far south as Florida.

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

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

Air quality alerts remain in effect for yet another day for the entire state of Minnesota with concentrations of wildfire ...

The Minnesota Pollution Control Agency (MPCA) has issued an air quality alert for all of Minnesota starting Saturday at 11 ...

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

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

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