The heat index is a measurement that considers both air temperature and humidity to determine how hot it actually feels to the human body.

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

Heat domes-which are behind some of summer's most extreme temperatures-occur when high pressure systems trap heat in the atmosphere.

LOUISVILLE, Ky. — It’s that time of the year again when heat and humidity cause sweltering temperatures across Kentucky and southern Indiana. You’ve likely heard about the heat index mentioned once or ...

The reason why the humidity makes it feel hotter than the actual temperature is because of our sweat. Our bodies like to stay near 98.6 degrees, so when our body temperature rises sweat is released ...

Delhi transitioned rapidly from oppressive heat to severe monsoon downpours. Multiple weather systems converged, causing ...