Relative humidity measures how much moisture is in the air compared to how much it could hold at a given temperature. It is simply the dew point temperature divided by the air temperature, times 100.

If you think this summer has felt extra sticky and sweltering hot in Ohio and Kentucky, you're not alone. Greater Cincinnati has spent much of the summer trying to stay cool, as the area has been ...

NORFOLK, Va. — Most summer days, you hear us talk about “humidity” when describing how the air feels. While many people are familiar with the term relative humidity — the percentage of water vapor in ...

Extreme heat can be hard on your heart. As temperatures rise, the heart pumps faster to move blood toward the skin to cool the body. This added strain on the cardiovascular system can increase the ...

Hot, sticky and unrelenting: That has been the experience for much of the country this summer, including more than a dozen states that had record high humidity in July. Last month was muggier than ...

YOU KNOW, JUST. IT JUST WAS A REALLY GREAT MORNING, AND YOU GOT TO GET OUT EARLY TO BEAT THIS HEAT. YES. OH, FOR SURE. YEAH. AND BECAUSE IT’S NOT JUST HOT, IT’S JUST REALLY THAT HUMIDITY THAT GETS YOU ...

Look for Spotty T-Storms mainly in the north Twin Cities Metro between Now and 2 p.m. then Hazy Sunshine, Hot and Very Humid through 4 p.m. with highs near 90 degrees and Heat Index Values in the mid ...

The heat index, or apparent temperature, combines air temperature and humidity to indicate how hot it feels to the body. High humidity slows sweating, the body's natural cooling system, making ...

South Carolinians are all too familiar with muggy summer days. Check your weather app of choice and you’ll notice humidity presented as a percentage: 68 percent humidity, 92 percent humidity, ...