Heat warning remains in effect as sweltering temperatures continue

A prolonged heat event persists across the region, with high temperatures and humid conditions expected to continue into the evening.

A prolonged heat event persists across the region, with high temperatures and humid conditions expected to continue into the evening. Environment Canada says daytime highs are expected to range from 30 C to 36 C, while overnight temperatures will remain elevated between 20 C and 25 C, offering little relief from the heat. Humidex values are forecast to reach 38 to 42, making conditions feel significantly hotter.

The heat event could persist into Thursday or Friday in areas near Lake Erie and Lake Ontario. Forecasters also warn that the hot, humid air could lead to deteriorating air quality, with the Air Quality Health Index potentially approaching the high-risk category. Public health officials advise people to stay hydrated, limit strenuous outdoor activities during the hottest parts of the day, and check on vulnerable individuals, including older adults, young children and those with chronic health conditions.

Here’s a look at the rest of the forecast Wednesday: Sunny early this morning then a mix of sun and cloud with 40 per cent chance of showers late this afternoon. Risk of a thunderstorm late this afternoon. Local smoke this afternoon.

Wind becoming northwest 20 km/h near noon. High 35. Humidex 44.

Wednesday Night: Partly cloudy with 40 per cent chance of showers this evening and risk of a thunderstorm. Clearing overnight. Local smoke.

Wind northwest 20 km/h becoming light this evening. Low 21. Thursday: Sunny.

Local smoke. High 32. Humidex 35.

UV index 10 or very high. Friday: A mix of sun and cloud with 30 per cent chance of showers. High 31.

Saturday: Cloudy with 30 per cent chance of showers. High 30.

Sunday: A mix of sun and cloud. High 28.