The wind chill is expected to improve slowly late Tuesday, January 7.
The city is also under an extreme cold weather alert and a wind chill warning.
An extreme cold weather alert is triggered when temperatures are expected to fall below – 15 C. The city makes extra shelter spaces available and overnight street outreach is increased in the downtown core to get the homeless in from the cold.
The strong weather started on December 21, Saturday night. Hundreds of thousands of Toronto residents woke up without electricity on Sunday morning, after an overnight ice storm knocked down trees and power lines, causing outages across the city. It took two weeks to restore electricity at all the places.
Video: Toronto Ice Storm