A heat warning remains in effect this morning for extreme southwestern Ontario, including Windsor, as Environment Canada continues to monitor dangerously high temperatures affecting the region.
This Tuesday, July 1, local time in Ottawa, daytime highs of 31 °C (88 °F) are expected across the bordering regions near Lake Erie, particularly along the Windsor–Essex corridor. The air remains humid and stagnant, driving humidex values even higher and contributing to uncomfortable, potentially hazardous conditions, especially for vulnerable populations.
Red-shaded zones on Environment Canada’s heat advisory map signal the areas under the most significant thermal stress. These warnings have been in place since late June, and although today’s heat may persist into the early afternoon, change is on the horizon.
According to Environment Canada, “showers and thunderstorms are expected today, ending the extreme heat and humidity by this evening.” Cooler air is expected to move in from the northwest, bringing relief to regions that have endured multiple days of oppressive heat.
As Canada Day celebrations unfold later today across southern Ontario, including major centres like London, Chatham-Kent, and Windsor, residents can expect unstable weather conditions, with a chance of stormy skies replacing the sweltering sun by late afternoon.
