Stay up to date with notifications from The IndependentNotifications can be managed in browser preferences.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 inAllNewsSportCultureLifestyleToronto recorded the world’s worst air quality among major cities on Wednesday as wildfire smoke from northwestern Ontario blanketed the region and triggered health warnings. Wildfires burning in remote areas of Ontario are sending smoke across Canada and into the northeastern U.S., though they are not directly threatening major cities.Toronto’s Air Quality Health Index reached 10+, indicating “very high risk,” with hazardous conditions expected to continue through Thursday night.New York City also experienced unhealthy air quality, prompting officials to issue an alert and advise residents to limit strenuous outdoor activity and take precautions ahead of the World Cup 2026 final in New Jersey.New York Gov. Kathy Hochul urged residents to take precautions as wildfire smoke created unhealthy conditions across the state, while experts warned the worst air quality may still be ahead and smoke could linger through the end of the week. In fullCanada wildfire smoke to spread across the US - here’s what to expectMore 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

New York City has been dealing with a "Code Red" due to the heat and air quality advisories from Canadian wildfire smoke days before the Spain-Argentina World Cup final.

Wildfire smoke has settled thickly in parts of New York, Connecticut, Wisconsin, Michigan and Minnesota—and it’s heading further south.

As of Tuesday night, just under 200 total active wildfires have been reported, according to the province.

A massive plume of smoke from wildfires burning across Canada has swept into the United States, degrading air quality across the Midwest, Northeast and Mid-Atlantic.

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

Environment Canada has issued health warnings after sky over city turns yellow

Toronto had the worst air quality of any major city in the world on Wednesday, the Swiss firm IQAir said, as Canadian authorities urged people to stay indoors.

Toronto had the worst air quality of any major city in the world on Wednesday, the Swiss firm IQAir said, as Canadian authorities urged people to stay indoors.

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

Residents have been warned to stay indoors to avoid both the smoke and the extreme heat

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…

Roughly 100 wildfires are raging out of control in Ontario, sending smoke streaming more than 1,000 miles from their origin.

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

A thick orange haze hung over Toronto on Wednesday 15 July as smoke from wildfires in northwestern Ontario engulfed Canada's largest city, giving it the worst air quality of any…

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.

As thick smoke settles in over major cities, Canada recorded the worst air quality in the world.

Stay up to date with notifications from The IndependentNotifications can be managed in browser preferences.Jump to contentThank you for registeringPlease refresh the page or…

Rauchschwaden, dunkler Himmel und schlechte Luftqualität: Nach Angaben der Regierung brannten am Mittwoch in Kanada rund 835 Feuer, von denen 112 als außer Kontrolle galten.

TORONTO: Toronto had the worst air quality of any major city in the world on Wednesday, the Swiss firm IQAir said, ...

Monitor ranks Toronto as having the worst air quality on earth, surpassing Kinshasa, DR Congo, and New Delhi, India.