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?

Create an account or log in to save stories. We’ve all heard the classic line, “It’s not the heat, it’s the humidity.” But honestly, what is humidity? And what exactly does dew point measure? Let’s ...

Meteorologist Paul Douglas answers reader questions about the weather and other natural phenomena every couple of weeks. Submit your own questions below. I’ve lived in other parts of the country, and ...

I know in Houston, we hear the term humidity which is used to correlate to how muggy it may feel outside. But what actually is humidity and what does it represent? Humidity is the measurement of water ...

Across much of the world, hotter days are no longer arriving alone. The air itself is changing, sometimes turning from dry oven to steam bath, other times drying out even as thermometers climb. As ...

Music fans gather at the Minnesota Country Club Festival in St. Paul on July 10. As meteorologists, one of the questions we hear all the time is: “Why don't you talk about relative humidity?” After ...