Millions of Americans and Canadians are breathing bad air right now due to wildfire smoke. Here’s what you need to know masks, ventilation and staying healthy.

Heavy smoke from several large wildfires blazing in Canada and Minnesota is expected to engulf large swaths of the Midwest and Northeast U.S. this week, exposing millions of…

Heavy smoke from several large wildfires blazing in Canada and Minnesota is expected to engulf large swaths of the Midwest and Northeast U.S. this week.

Wildfires in Canada and Minnesota are sending heavy smoke to the Midwest and Northeast U.S., causing poor air quality alerts.

Around 100 million Americans could be affected by the wildfire smoke, though impacts will vary by location

Over 100 wildfires are burning in Canada, with winds carrying the smoke southeast. Warnings about unhealthy air extend from Minnesota through Toronto and into New York.

Warnings about dangerous, unhealthy air extended Wednesday from Minnesota through Toronto and into New York.

More than 830 wildfires were burning in Canada on Wednesday, along with more than a dozen in northern Minnesota, forcing mandatory evacuations.

Wildfire smoke is dense enough in a handful of states that experts recommend masks for those who can’t stay indoors.

Fires in parts of Canada are blanketing several cities with smoke. Experts recommend limiting time outside, purifying indoor air and wearing a respirator if outside.

Canada wildfires 2026 smoke drifts across North America, triggering air quality alerts and health concerns. Thousands of campers were evacuated from remote areas after…

The triple threat of wildfire, poor air quality and extreme heat have been impacting countries around the world, including Canada, the United States and European nations

When wildfires burn, smoke can travel long distances and degrade air quality far away, posing risks to those breathing it.

Wondering why it smells like smoke outside? Canadian wildfires are impacting millions in Ontario, Minnesota, Toronto, New York, Michigan, Wisconsin and Boston.

Millions of Americans face air quality alerts from Minnesota to New York as authorities urge people to stay indoors

Climate change means bad air pollution, wildfires, and extreme heat are all happening at once. Here's what to know and how to stay safe.

A wave of toxic air flowing in from Canada to the US has transformed three major cities into the most unbreathable places on Earth.

As wildfire smoke threatens air quality and safety for millions, here’s your playbook to keep your family safe from the damaging effects of smoke.

Wildfire smoke and bad air quality are hitting cities due to fires in Canada and Minnesota.

As Canadian wildfires spread smoke across the U.S. the air pollution is dangerous to health. But there are ways to protect yourself. Here's what to know.

Heavy, pungent wildfire smoke darkens skies in the US from the Great Lakes to parts of the East Coast, reducing visibility and prompting warnings that breathing the air outside…