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

Smoke from more than 100 wildfires blazing in Canada is expected to spread and impact air quality index in Minnesota.

Smoke from Canadian wildfires has carried another day of poor air quality south of the border to the American Midwest.

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

Heavy wildfire smoke from Canada is moving into the upper Midwest over the next couple of days. The Minnesota Pollution Control Agency issued an air quality alert for all of Minnesota from Friday ...

Rising heat, winds, and dry air sparked blazes in the Canadian provinces of Saskatchewan and Manitoba, according to the country’s Department of Natural Resources. Residents in the United States are ...

Living in the Midwest means being affected by the Canadian wildfires that occur just about every year. Here is what to know ...

Canadian wildfires are raising air quality concerns in several states, including the Dakotas, Minnesota and Wisconsin.

In some parts of the U.S., air quality reached "unhealthy" levels Sunday in North Dakota and small swaths of Montana, Minnesota and ... at a news conference. Canada's wildfire season runs from ...

Smoke traveling from wildfires in Canada, North Dakota and Minnesota triggered an air quality warning in northern Wisconsin.

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