De rook van honderden natuurbranden in Canada en de Verenigde Staten zorgt voor slechte luchtkwaliteit in de Canadese stad Toronto. Ook steden in het noordwesten van de VS waarschuwen voor de rook, die te ruiken is in New York.

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

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