In the U.S., wildfire smoke has reached states from Montana to Wisconsin but was especially heavy in Minnesota on Sunday.

"Fine particle levels are expected to reach the red air quality index (AQI) category, a level considered unhealthy for ...

With over 100 active wildfires burning in Canada, wildfire smoke has drifted across the border into the United States, prompting Minnesota officials to issue the state's first air quality alert of ...

More than 80 active wildfires burning across Canada are sending wildfire smoke back to Minnesota and Wisconsin Sunday. The ...

Smoke from Canadian wildfires was predicted to spread across the state Sunday, prompting the Minnesota Pollution Control ...

Thick wildfire smoke from over 100 active fires in Canada has drifted into the United States, prompting Minnesota's first air ...

As wildfire season begins, smoke from active wildfires in Canada has reached the U.S., prompting air quality concerns and ...

Winds pushed a band of heavy smoke from wildfires burning in British Columbia south from Canada, prompting officials in ...

DULUTH, MN (KDAL) – A band of smoke from wildfires in northeast British Columbia, Canada moved into northern Minnesota and ...

The damage of wildfires can expand far beyond the active blaze, as toxic smoke from Canadian wildfires crosses borders, ...