When you think of smog, the first thing that comes to mind is hot hazy and humid summer weather.

But smog has bothered Montrealers since November. The cause: wood burning stoves.

CBC.ca reports that “Montrealers lighting up their wood stoves to fight off the chill of an exceptionally cold winter have led the city to set a record for winter smog.”

“The city has recorded 21 smog days since November — the highest number since Environment Canada started recording smog days in 2004.”

“On Tuesday evening, Environment Canada recorded the city’s air quality index at 108, compared to the acceptable limit of 50.”

Read more on CBC.ca  .

Photo by Environment Canada.