It's a T-shirt kind of day in Washington, DC: 85 degrees with 63 percent humidity. We all know those numbers mean hot, but what exactly does that humidity percentage tell us? And why should we care?

Are you wondering what the target indoor humidity should be in winter?By comparing figures from official sources, a range of ...

I love getting your questions, and I got a great one from Steve! He asks: It's pouring rain, but the outdoor humidity gauge says 74% relative humidity. How's that possible? Shouldn't it be 100%? This ...

New research finds indoor relative humidity between 40 and 60 percent is associated with relatively lower rates of COVID-19 infections and deaths, while indoor conditions outside this range are ...

Maintaining relative humidity in the 40%-60% range in indoor spaces could help slow the spread of the coronavirus this winter, according to a November 18, 2020 Washington Post opinion piece ...

Deep inside the caves of the Pyrenees, some of Earth's most specialized animals are living on a physiological knife edge, and ...