Jump to contentThank you for registeringPlease refresh the page or navigate to another page on the site to be automatically logged inPlease refresh your browser to be logged inAllNewsSportCultureLifestyleCanadian wildfire smoke has enveloped North American cities, causing evacuations, event cancellations, and dangerously poor air quality across affected regions. Exposure to wildfire smoke, which contains harmful chemicals and fine particulate matter (PM2.5), can damage lungs as severely as cigarette smoking and is linked to tens of thousands of deaths. The smoke poses significant risks to cardiovascular health, increasing the likelihood of cardiac arrest and complications related to heart disease, especially when combined with extreme heat. Beyond the heart, wildfire smoke can trigger brain inflammation, potentially contributing to conditions such as dementia, Alzheimer's disease, and mood disorders, and is associated with higher stroke rates. Pregnant women face increased risks, with exposure linked to pre-term births, while protective measures include staying indoors, wearing well-fitting KN95 masks, and ensuring homes are sealed. In fullIt’s not just your lungs that can be impacted by the Canadian wildfire smokeMore bulletinsThank you for registeringPlease refresh the page or navigate to another page on the site to be automatically logged inPlease refresh your browser to be logged in

TORONTO/NEW YORK: Toronto’s air quality ranked the worst among major cities globally on Wednesday as wildfire smoke from northwestern Ontario blackened skies and spread into the…

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

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.

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

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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.

Chemicals and particles too small to be seen from wildfire smoke can cause problems ranging from minor to serious

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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…

Battling wildfire smoke? Here are some practical ways to protect yourself, your home — and help you to breathe easy.

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Wildfire smoke from fires burning in Canada and northern Minnesota has been pouring across the Great Lakes and northeastern U.S. states.

Wildfire smoke exposure is linked to tens of thousands of deaths in the U.S.

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Along with dystopian views of Chicago or the World Cup final’s stadium, wildfire smoke is creating dangerous conditions for people to breathe.

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.