Wildfire smoke will continue to blanket Toronto on Friday, keeping air quality at high-risk levels before rain expected Saturday could help clear the air.

As of Tuesday night, just under 200 total active wildfires have been reported, according to the province.

Environment Canada has issued health warnings after sky over city turns yellow

Toronto had the worst air quality of any major city in the world on Wednesday, the Swiss firm IQAir said, as Canadian authorities urged people to stay indoors.

Toronto had the worst air quality of any major city in the world on Wednesday, the Swiss firm IQAir said, as Canadian authorities urged people to stay indoors.

The smoke from the wildfires in northern Ontario is expected to linger around until Friday. Check where and how it's moving here.

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

TORONTO/NEW YORK: Toronto’s air quality ranked the worst among major cities globally on Wednesday as wildfire smoke from northwestern Ontario blackened skies and spread into the…

A thick orange haze hung over Toronto on Wednesday 15 July as smoke from wildfires in northwestern Ontario engulfed Canada's largest city, giving it the worst air quality of any…

Wildfire smoke is dense enough in a handful of states that experts recommend masks for those who can’t stay indoors.

Fires in parts of Canada are blanketing several cities with smoke. Experts recommend limiting time outside, purifying indoor air and wearing a respirator if outside.

Monitor ranks Toronto as having the worst air quality on earth, surpassing Kinshasa, DR Congo, and New Delhi, India.

Toronto recorded among the worst air quality of all major cities worldwide on Wednesday as thick smoke from wildfires in Ontario blanketed its skyline and drifted into the US,…

In Canada, more than 100 active wildfires continue to burn in northern Ontario. The smoke has reached Toronto, where authorities are urging residents to stay indoors as air…

Toronto’s air quality ranked the worst among major cities globally on Wednesday as wildfire smoke from northwestern Ontario blackened skies and spread into the northeastern US,…

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Outdoor workers are donning masks, taking breaks or staying home altogether as wildfire smoke wafts across southern Ontario and health officials raise concerns.

Toronto General Hospital and Toronto Western Hospital saw an 80 per cent spike in respiratory cases on Wednesday.

From mask effectiveness to long-term health risks, Star science reporter Kevin Jiang is taking your wildfire smoke questions live in the comments on Friday at 11 a.m.

Wildfire smoke will continue to blanket Toronto on Friday, keeping air quality at high-risk levels before rain expected Saturday could help clear the air.

The sky over Toronto on Wednesday was shrouded in a thick blanket of smoke as Canada's devastating wildfire season continued, with the city recording the worst air quality among…