The blazes have destroyed nearly 15 million acres of land, and the fire season is expected to go into September. With it comes the threat of smoky days in Minnesota and North Dakota.

Intense wildfires in Canada’s western provinces continued blazing Wednesday, sending smoke southward and triggering air quality alerts throughout the United States. More than 400 wildfires are ...

MILES PARKS, HOST: Something like 500 wildfires continue to burn across Canada, and it's affecting the air we breathe. Earlier this week, the air quality in Toronto was among the worst in the world.

The current infrastructure also isn’t set up to fully account for the shifting behavior of wildfire smoke, which can travel hundreds of miles or more from fire sources to affect air quality and public health in distant communities. That smoke can also include toxins, such as lead when cars and homes burn.

Wildfires in Canada are continuing to blanket its southern neighbors in smog, triggering new air quality alerts in the northern high plains, Midwest and Great Lakes, according to the National ...