Over 80 million people from the Midwest to the East Coast are under air quality alerts as smoke from the Canadian wildfires sweep across the US border Tuesday, prompting beach closures, warnings about reduced visibility and calls to stay indoors.

Thick plumes of smoke from dozens of wildfires raging in Ontario, Canada, are billowing across the US border, compromising the air quality for millions of residents in Wisconsin and Minnesota.

Canada's fire season is only just beginning. If it follows the pattern of a normal year, it will peak in the hotter months of July and August.

The smoke from hundreds of wildfires burning in Canada, which has already blanketed parts of the US and placed around 75 million people under air quality alerts, has reached as far as Norway, according to scientists in that country.

By Arriana McLymore and Deborah Mary Sophia (Reuters) -Amazon.com said on Thursday that it was cutting delivery routes short for

The wildfire smoke that originated from Canada shrouded some major US cities on the Eastern Seaboard, leaving millions at risk of breathing unhealthy air and prompting the cancellation of outdoor activities ranging from school recess to Major League Baseball games.

With toxic air quality in parts of North America likely to persist, here's what you can do to stay safe.

The climate crisis is stacking the deck in favor of larger and more frequent wildfires as temperatures rise, and has renewed the debate over regulation.

Canadian wildfires have caused air quality alerts to go into effect across the U.S. Here’s how to stay safe.

By Nancy Lapid The northeastern United States is blanketed under a pungent haze caused by smoke carried down

As an orange haze of wildfire smoke from Canada smothers parts of the eastern US, officials are warning residents in both countries of unhealthy or hazardous air Wednesday.

Air quality advisories have been issued in Canada and the northern US as wildfire smoke travels south.