Smoke particles span the whole continent.
Environment Canada has issued a smog warning for the Montreal area, including Laval, as well as much of the North Shore and the entirety of the Montérégie and Estrie regions.
The hazy sky is the result of travelling smoke from fires in Manitoba and Ontario, the federal weather agency says.
Smoke from forest fires over northwestern Ontario is affecting, since this morning, the air quality over the Abitib… https://t.co/uVfzqCwJmB— ECCC Weather Quebec (@ECCC Weather Quebec) 1627225878.0
It encourages children with asthma and people with respiratory problems or heart disease to "avoid intense physical activity outdoors until the smog warning is lifted."
FireSmoke Canada, an online smoke forecast service supported by the federal and provincial governments, shows smoke from the Ontario, Manitoba and West Coast fires spanning the continent.
The forecast suggests the atmosphere above Montreal will partially clear Tuesday afternoon.
Environment Canada also says to expect improvement Tuesday.
This article's cover image is used for illustrative purposes only.