Wildfires in Ontario make Toronto air quality worst in world
Smoke from over 100 wildfires in northern Ontario has caused Toronto's air quality to become the worst globally, prompting Environment Canada to issue health warnings. The sky over the city turned a "sickly yellow" on Wednesday due to the smoke, which has also affected cities across the northeastern United States.

Briefing Summary
AI-generatedSmoke from over 100 wildfires in northern Ontario has caused Toronto's air quality to become the worst globally, prompting Environment Canada to issue health warnings. The sky over the city turned a "sickly yellow" on Wednesday due to the smoke, which has also affected cities across the northeastern United States. Mandatory evacuations have occurred in several First Nations communities in northwestern Ontario, with some, like Collins, being destroyed. The region is also experiencing a heatwave. Air quality alerts have been issued in parts of Michigan, Minnesota, and Wisconsin, with forecasts predicting thicker smoke to move towards New York and other eastern seaboard cities.
Article analysis
Model · rule-basedKey claims
5 extractedEnvironment Canada issued health warnings due to the smoky, yellow sky over Toronto.
Mandatory evacuations were prompted for several First Nations communities due to the wildfires.
A heatwave shattered a three-decade record in Toronto, reaching 37.3C downtown.
The community of Collins, Ontario, has burned to the ground.
Smoke from over 100 active wildfires in northern Ontario made Toronto's air quality the worst in the world.