WorldCanadian wildfire smoke chokes Toronto, threatens US cities

Smoke from wildfires in northwestern Ontario has darkened Toronto’s skies and pushed the city’s air quality to the worst level among major cities worldwide. Health warnings urged residents to limit time outdoors as temperatures stayed high. The smoke also raised concerns for cities in the United States. The conditions linked the ongoing wildfire threat with worsening urban air pollution across the border.

Canadian wildfiressmoke pollutionTorontoair quality

RReuters★★★★☆2026-07-15 21:25Original