Maps Show Wildfire Smoke Forecast, Air Quality Alerts Spread Across U. S. As summer gives way to autumn, a different kind of fire is raging across North America one that imperils human health as much as property.
The latest wave of wildfires in Canada and Minnesota has triggered hazardous air quality alerts from the Midwest to the Northeast United States, with cities like Detroit, Minneapolis, and Chicago among the most polluted on the planet.
More than 100 blazes are burning in Canada, with winds carrying smoke southeastward.