Severe Weather Alerts - Ajax, Ontario

  • Extreme Cold Warning

    Extreme Cold Warning in effect until Sunday, 2:47 AM EST. Source: Environment Canada

A period of very cold wind chills is expected.

The coldest air of the season has settled across Southern Ontario for the weekend.

Extremely cold wind chill values between about minus 30 and minus 40 occurred last night and this morning, aided by bitterly cold northerly winds. Wind chills will improve only marginally this afternoon under the strengthening mid February sun. However, they will plunge below minus 30 again tonight in most locales, with light northerly winds adding a frigid bite to the air.

Some improvement is expected on Valentine's Day afternoon as temperatures and wind chills both moderate somewhat.

Considerably milder weather will arrive on Family Day Monday with temperatures approaching normal values for this time of year.

Wear appropriate clothing.
- Always wear clothing appropriate for the weather. Synthetic and wool fabrics provide better insulation. Some synthetic fabrics are designed to keep perspiration away from your body which keep you dry and further reduce your risk.
- Dress in layers with a wind resistant outer layer. You can remove layers if you get too warm (before you start sweating) or add a layer if you get cold.
- Wear warm socks, gloves, a hat and scarf in cold weather. Be sure to cover your nose to protect it.
- If you get wet, change into dry clothing as soon as possible. You lose heat faster when you're wet.

Protect yourself.
- On sunny days wear sun glasses, lip balm and sunscreen to protect your skin from UV and keep it moisturized to help prevent windburn.
- Wear a face mask and goggles if you are participating in winter activities such as skiing, snowmobiling and skating to protect your face from frostbite and windburn.
- Keep moving (especially your hands and feet) to keep your blood flowing and maintain your body heat.
- Drink enough fluids, but avoid very cold drinks and consume warm meals regularly.

Extreme cold warnings are issued when very cold temperatures or wind chill creates an elevated risk to health such as frost bite and hypothermia.

Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to or tweet reports to #ONStorm.