Toronto recorded the worst air quality among major cities worldwide as wildfire smoke from northwestern Ontario blanketed the city, prompting health warnings an

Toronto recorded the worst air quality among major cities worldwide as wildfire smoke from northwestern Ontario blanketed the city, prompting health warnings and urging residents to limit time outdoors. [▻](https://video.twimg.com/amplify_video/2077468774597541888/vid/avc1/1920x1080/7WR72sujXER7vo…