Working out in the summer heat can be rough, but how do you know when it's so hot it may be unsafe? Here's why I always check ...

This summer, communities throughout the country are experiencing periods of intense heat, and there’s more to come.

Environment Canada says it's going to be a hot and humid week in Durham Region with hazy conditions to kick it off. They've ...

Parts of the Greater Toronto Area (GTA) are under an air quality warning on Monday alongside an ongoing heat warning in the ...

The National Weather Service starting this summer, instead of “excessive heat,” our language will change to “extreme heat.” ...

Parts of the Greater Toronto Area (GTA) are under an air quality warning on Monday alongside an ongoing heat warning in the ...

Today brings a dangerous combination of extreme heat and fire weather to the Treasure Valley. A Heat Advisory and Fire ...

The massive blaze has already scorched 8,925 acres and remains completely uncontained, with firefighters struggling to gain ...

Over the weekend Blue Mountain's steep, rocky, alpine terrain was turned into the Spartan race. More than 11,000 people took ...

The UK experienced the final day of the latest heatwave to reach the British Isles, with parts of England, Scotland and Wales ...

As heat waves intensify, many people are turning to cooling gadgets and wearables to stay cool. Popular options include ...

NWS Portland issues heat advisory and extreme heat watch for high temps of 93-98°F, risks of heat-related illnesses.