Home › Weather › Ontario Weather Warning
Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the Civic Maple Weather Desk. Data from Environment and Climate Change Canada and other national met services via Open-Meteo.
Environment and Climate Change Canada issues weather warnings for Ontario when conditions pose a risk to safety or property. Warnings cover snowfall, freezing rain, wind, tornadoes, extreme heat, and cold. Check local alerts before heading out, especially during storm season.
What weather warnings apply to Ontario today?
Ontario receives warnings tailored to current conditions. A snowfall warning means 15 cm or more within 12 hours. Freezing rain warnings signal ice buildup that makes roads and power lines hazardous. Tornado warnings are issued when a tornado is detected or imminent. For southern Ontario, severe thunderstorm watches and warnings are common in summer. Northern Ontario warnings often focus on heavy snow and extreme cold. The Ontario weather warning page lists active alerts by region.
Where can I find a live map of Ontario weather warnings?
Environment Canada’s website provides an interactive map showing all current warnings, including ontario weather warnings today map view. You can zoom to see southern ontario weather warning today or northern ontario weather warnings today. The map updates in real time and colour-codes warnings by severity. For a quick summary, the Canada weather hub links to regional alerts and forecasts.
How do I know if there’s a tornado warning in Ontario today?
Check Environment Canada’s alert page or the Weather Network app for tornado warning ontario today updates. Tornado warnings are short‑lived – act immediately if one is issued for your area. Listen for a warning siren or emergency alert on your phone.
What does a “southern Ontario weather warning tomorrow” mean?
It means a watch or warning is in effect for the next day. For example, a snowfall warning issued tonight often applies to the following morning commute. ECCC typically issues these 12–24 hours ahead. The Ontario snow storm forecast page gives timing details.
Can I see ontario weather warnings today live?
Yes. Environment Canada’s public alerts page displays live warnings sorted by region. The map at weather.gc.ca shows ontario weather warnings today in near‑real time. Mobile apps can push notifications for your location.