Humidity doesn’t just make you feel sticky and uncomfortable – it also creates extra dangerous conditions on hot days.

A public health researcher explains the signs someone is developing heat exhaustion or heat stroke, and what to do.

In 2021, a young family died of heat stroke on a California trail after setting out for a hike when temperatures were still in the 70s Fahrenheit (low to mid-20s Celsius).

Heat-related illnesses can quickly progress to life-threatening heat stroke, so it is important to recognize the warning ...

The heat index is a measure of how hot it really feels on your body when relative humidity is factored in with the actual air ...

The heat index could get as high as 107 in Naples and higher in other parts of SWFL.

The heat index could get as high as 111 in South Florida, with the strongest heat expected along the southern Gulf Coast.

At its most basic: the heat index is what the temperature feels like when you're outside. The chart above shows the combination of air temperature with humidity. It's important to note the chart ...