Thursday was the peak of this brutal heat wave, with heat index values topping 110 degrees in several Connecticut towns.

It’s during times like this that you often hear people talk about the “heat index” and “how hot does it feel?” That’s because temperature and heat index are two separate things.

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As a dangerous heat wave drives temperatures and humidity higher across New York City, utility provider Con Edison and New ...

The metric of how hot the air actually feels has roots in a 1979 journal paper called “The Assessment of Sultriness.” By Andy Newman In recent days, you may have seen or heard many mentions of a ...

Heat can be dangerous, but health experts say there are ways to manage the threat. Scorching temperatures, especially ...

As temperatures climb, high school baseball and softball teams are taking extra precautions to keep athletes safe. See how ...

Europe’s record-breaking heat wave was made far more likely by human-driven climate change, with deadly impacts already ...

But another measure, the heat index, could do just that. In Milwaukee, the Nation Weather Service forecast for Tuesday, June 30 calls for a high near 95 degrees, with the heat index as high as 105 ...

As Pittsburgh's temperatures climb toward triple digits, these are the key heat-related weather terms you should know.