Attributing Canada's June heat wave to climate change is an important step in adapting to a warmer world

This June saw major heat waves across Canada with peak temperatures—measured over a three-day period—of 7.4°C in eastern Ontario, 10.7°C in southern Québec, 7.2°C in northern Québec and 10.6°C in Atlantic Canada. On June 19, more than 100 locations across Canada set new heat records for that day, with Bathurst, N.B., being the hottest at 37.6°C. The year 2023 was the globally hottest year on record.