Ontario’s first significant tornado of 2025 touched down in the northwestern part of the province during a round of severe ...

Both Saturday and Sunday look to be a similar forecast for most areas of Ontario, with temperatures above 30 C.

Environment Canada is forecasting increasing cloudiness this morning in Halton Hills. The daytime high is expected to reach ...

TORONTO - Environment Canada says most of Ontario will feel sweltering temperatures starting this weekend with a multi-day heat event expected to bring a humidex as high as 40.

Environment Canada is expected to issue a heat warning for southern Ontario, with hot conditions potentially lasting until ...

Environment Canada has issued yet another heat warning for eastern Ontario as temperatures are expected to rise low 30s this ...

Sweat cools us off by wicking heat away from our skin as it evaporates. Humidity prevents our sweat from evaporating efficiently—the trapped heat causing our body temperature to rise. This can lead to ...

National weather and public health officials are urging people across much of the Northwest to keep cool Friday.