Wildfire activity has not slowed down in northwestern Ontario, as three First Nations remain under evacuation, with hundreds ...

Wildfire smoke spreading throughout northwestern Ontario has prompted closures and event cancellations on Tuesday.

In the upper Midwest of the United States, Michigan, Wisconsin and Minnesota have issued air quality warnings as smoke from ...

Parts of Canada are seeing some of their most unhealthy air yet, and the smoke is likely to move over the United States again ...

Environment Canada is warning Toronto residents to limit their time outdoors today due to poor air quality caused by wildfire ...

Smoke from forest fires as far away as northwestern Ontario and the prairies are continuing to cause poor air quality for ...

Smoke from wildfires in Canada has spread more than 5,000 miles, reaching parts of Russia and Europe during the past week.

Much of Ontario remains under a special air quality statement on Friday morning as a haze of wildfire smoke chokes out the ...

Smoke from the Canadian wildfires has triggered air quality warnings in several provinces and surrounding U.S. states. As of ...

More than 200 wildfires are raging across Canada, sending a thick blanket of choking smoke through the U.S. Midwest. Experts ...

More toxic than other sources of pollution, wildfire smoke can cause a range of health effects, from mild coughs, itchy eyes and headaches to dizziness, wheezing, chest pains, asthma attacks, ...

The country's legacy of mining means that toxic metals could be carried along plumes of smoke, endangering people in its path ...