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Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the Canada Edition Weather Desk. Data from Environment and Climate Change Canada and other national met services via Open-Meteo.
Check your local forecast and Environment Canada alerts before heading out this morning: a mix of snow squall warnings for parts of northern Ontario and freezing rain advisories for the Lake Erie shoreline are active, with a slow-moving system expected to bring hazardous travel into the evening.
What weather alerts are active in Ontario today?
Southern Ontario weather warning today covers a broad band from Windsor to the Niagara Peninsula, where a freezing rain advisory is in effect through late morning. For northern Ontario weather warnings today, a snow squall watch has been issued for the Highway 11 corridor near North Bay and Temiskaming Shores. Meanwhile, a tornado warning Ontario today is not currently in play, but a strong cold front sweeping across the Great Lakes could trigger rapid changes — stay alert if you’re near Lake Huron or Georgian Bay shoreline communities.
How to prepare for Ontario weather alerts this week
For southern Ontario weather warning tomorrow, a deepening low tracking east means another round of mixed precipitation is likely from London to Kingston by Tuesday afternoon. If you’re planning travel, check the Canada weather warnings page for an up-to-date map. Keep emergency kits handy and monitor Environment Canada’s weather warning bulletins — especially in areas prone to sudden lake-effect bands.
How do I get weather alerts Ontario today in real time?
Enable wireless alerts on your phone or download the Environment Canada weather app. For a live overview, visit the Canada weather hub or the Weather Network’s alert map. Southern Ontario weather warning today live updates are also broadcast on local radio.
What’s the difference between a watch and a warning?
A watch means conditions are favourable for severe weather; a warning means it’s occurring or imminent. For tornado warning Ontario today scenarios, a warning triggers immediate shelter. Check the Canada weather warnings page for definitions.
Where can I find the Ontario weather warnings today map?
Environment Canada publishes a colour-coded national map at weather.gc.ca. For a simplified view, the canada weather warnings page on Canada Edition aggregates regional polygons. You can also filter by southern or northern Ontario zones.