Smoke from fires in northern Ontario has drifted all the way to southern Quebec, resulting in thick smog and an orange and pink sun, Monday and Tuesday.
Environment and Climate Change Canada issued a smog warning for several parts of the province, including the Montreal and Quebec City areas, saying the smoke is causing fine particulates, leading to poor air quality.
"Smog especially affects asthmatic children and people with respiratory ailments or heart disease. It is therefore recommended that these individuals avoid intense physical activity outdoors until the smog warning is lifted," said the warning on the federal agency's website.
Simon Legault, an Environment and Climate Change Canada meteorologist, said that of the three levels of air quality measurements used by the agency, southern Quebec is at the worst.
"We are reaching levels of pollution … that are leading to bad air quality," Legault said in an interview.
He said wind was pushing the smoke from the intense fires south, and would be pushing it further south overnight.
"It's maybe not something we see every year, but it's something we see from time to time.… It depends on where the fires are and how strong they are."
Legault said there's a possibility the smoke may return next week, according to wind forecasts.
Quebecers shared pictures on social media of the unusual appearance of the sun, discoloured by the haze.