This battery-powered sensor doesn’t do a whole lot, but it’s an inexpensive way to get-at-a-glance temperature and humidity readings, with long-term reporting in the SwitchBot app. Today’s homeowners ...

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 ...

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.

Dew point/relative humidity questions come up fairly often and this is a good one. Water vapor in the atmosphere is pretty important for deep-sky observing and photography. The atmosphere can only ...

As August kicks off, South Carolina residents are again under a heat advisory with temperatures that could feel like 108 degrees. Like much of the Southeast, Upstate residents will see the heat index ...