An Extreme Cold Warning remains in effect for all of southern Ontario.
Skin can freeze in minutes and with a windchill of -30 today and tonight, it won't be much warmer.
The windchill this evening is expected to be between -25 and -30.
People with children and pets are urged to limit their time outside.
It looks like we'll see a bit of a warm-up by Wednesday, when the temperature rises to a high of plus 1.