Environment Canada has issued an Extreme Cold Warning for the region.

From Environment Canada:

Hazard:
Wind chill values near minus 40.
Minimum temperatures near minus 30 degrees Celsius.

When:
Tonight into Thursday morning.

Extreme cold puts everyone at risk.

Synthetic and wool fabrics provide good insulation.

Cover up. Frostbite can develop within minutes on exposed skin, especially with wind chill.

Keep emergency supplies in your vehicle such as extra blankets and jumper cables.

If it's too cold for you to stay outside, it's too cold for your pet to stay outside.