Wildfire smoke resulted in the city closing outdoor pools and cancelling outdoor programs, but many Torontonians who work outdoors still showed up on the job Thursday.

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…

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.

Wildfire smoke resulted in the city closing outdoor pools and cancelling outdoor programs, but many Torontonians who work outdoors still showed up on the job Thursday.