Forget Humidity, Dew Point Is How It Really Feels Outside

vic927/Shutterstock.comHumidity can have a huge effect on how hot it really feels outside. Thankfully, weather apps typically include humidity numbers, but you’re probably looking at the wrong ones. What you should be checking is the dew point. The Problem With Humidity Pretty much every weather app has a percentage listed for “humidity.” The full name for this metric is “relative humidity.” It tells us how much the air is saturated with water. Most people assume that a high relative humidity percentage is what determines how humid it feels, but that’s not entirely true. Here’s the problem: Warm air can hold more water than cold air. Imagine that there are cups of varying sizes in front of you filled halfway with water. They’re all 50% full, but the biggest cup clearly has more total water than the smallest. The big cup is like warm air. It has a higher capacity to hol… Click below to read the full story from How To Geek
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