The big chill is back.
The city of Toronto has issued an extreme cold weather alert since this deep freeze we are experiencing will stick around until the end of the weekend.
On Tuesday, the high is expected to reach -5 C but the temperature is expected to drop to - 15 C overnight. It will feel even colder when you factor in the wind chill.
The extreme cold will continue throughout the week. On Wednesday for example, a high of -8 is forecasted with a wind chill of -25.
A cold weather alert is called when there is increased danger to homeless people from extreme cold weather or extreme winter weather conditions. Usually, it is put into effect when Environment Canada predicts overnight lows of -15 degrees Celsius or lower.
During that time, more shelter beds are made available to the city's homeless and overnight street outreach is increased in the downtown core.
Metro Hall is automatically opened as a Warming Centre at 3 p.m. on the day an Extreme Cold Weather Alert is called. People can get warm, have a hot drink and a light snack, and get assistance to access an emergency shelter bed.