A new heat wave is affecting parts of Canada, with Ontario expected to see the most intense conditions first. Forecasters say temperatures in Ontario are set to reach the mid- to high 30s Celsius, and humidex values are expected to climb to around the mid-40s, reflecting high humidity and making conditions feel hotter than the actual air temperature.
Meanwhile, conditions in Manitoba are described as improving as temperatures “even out,” suggesting the most extreme part of the heat event may shift from Manitoba toward Ontario. The Winnipeg Free Press and The National Observer both frame the situation as a moving period of extreme heat, rather than a single-location event, with forecasts indicating a peak in Ontario around the start of the day and then changes as the weather pattern progresses.
Both sources emphasize the role of humidity in the heat risk by focusing not only on air temperatures but also on humidex readings. The overall picture is that the heat wave peaks in Ontario while Manitoba experiences less severe conditions compared with earlier in the event.
