Meteorologist Ray Petelin joined the KDKA Weather Team in October 2018, but is no stranger to the weather in Pittsburgh and Western Pennsylvania. He has been forecasting in Pittsburgh since 2011 and ...

INDIANAPOLIS — Despite how it sounds, relative humidity isn’t a great measure of how humid it feels outside. That’s why, when it’s muggy, meteorologists talk about dew point temperature instead.

Know the absolute scientific limits of human heat tolerance. Discover how wet-bulb temperatures, extreme humidity, and 45°C heatwaves cause rapid organ failure and fatal heat stroke.