Environment Canada has issued health warnings after sky over city turns yellow Smoke from more than 100 active wildfires in northern Ontario have made Toronto’s air quality the cur…

Smoke from more than 100 active wildfires in northern Ontario have made Toronto’s air quality the current worst in the world and caused yellow, smoky air in cities across the north-east US. Environment Canada issued health warnings on Wednesday after the sky over country’s largest city turned a sickly yellow and was ranked the worst in the world according to IQAir, the Swiss technology company that racks global air quality. The city is also suffering a heatwave that shattered a three-decade record after reaching 37.3C in the downtown core, with runways at its main international airport hitting 55C. The wildfires burning across northwestern Ontario have prompted mandatory evacuations from a number of First Nations communities. This article includes content hosted on platform.x.com. We ask for your permission before anything is loaded, as the provider may be using cookies and other technologies. To view this content, click 'Allow and continue'. Striking video footage of a train near the community of Armstrong, Ontario, highlighted the speed and ferocity of the fires. “This could potentially overtake us here … This has gotten a little scary,” says a crew member as a wall of flames whips across the windows. The railway company Canadian National confirmed the crew had been “safely evacuated” from the area. Other images showed families fleeing their homes by boat against the backdrop of massive plumes of smoke. “My family hometown, Collins Ontario, is GONE,” Nadya Kwandibens, a photographer, posted on social media.