Dew point and relative humidity, two terms that have floated around many weather forecasts over the years. What exactly do they mean and when are they best used to describe the conditions outside? Let ...

(WHTM) — When temperatures rise, sometimes the air can feel dry and comfortable. But, sometimes it can feel downright tropical outside. This is caused by moisture in the air and it makes the air ...

Humans, microbes (bacteria, viruses, fungi), and plants all react differently to dry ambient conditions. Microbes adapt quickly by shrinking down, forming thicker membranes, and becoming dormant.

Keeping your home’s humidity in the 40% to 60% range could make it harder for flu viruses to spread.

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?

Forbes contributors publish independent expert analyses and insights. I make maps, and discuss the climate. Aug 23, 2018, 11:25am EDT Dec 10, 2021, 08:30am EST This article is more than 7 years old.