I’m of a firm belief that not all 72° temperatures are created equal. It’s like a language to alert everyone that it’s going to be horrific outside. And so that’s the real value of the dew point. When the dew point is at 75°, everyone knows that it’s going to feel terrible. I use the dew point alone, because it’s a standalone measure of how much moisture is in the atmosphere. I don’t mind a dry heat - Arizona is fine!Īnd we’d be so wrong. “45 percent relative humidity” in my chicken weather brain would sound like a dry heat. So if I checked nothing but the relative humidity, I’d be like, “Oh, it’s 45 percent.” If I go outside, I will just be hit by this wall of death and sweat. If you have a temperature of 100° and a dew point of 75°, that would give you a relative humidity of around 45 percent. But you and I both know, because we know dew point, it’s going to be hot as heck out there.īased on what you’re saying to me, and based on my very elementary knowledge of the dew point, my calculation is that that sounds extremely disgusting. I always like to think about this: If the dew point is 75° but your temperature is 100°, your relative humidity is going to be low, because relative humidity is calculating the relationship between the temperature and the dew point.
50° to 60° is generally pretty, pretty perfect. But there’s definitely a “Goldilocks zone” where the dew point is, like, 55°. That’s when you have to turn on the humidifier.Įxactly.
The other threshold is when the dew point gets too low, when it’s too dry, and that’s when you have chapped lips instantly, and it’s winter time. When the dew point is lower, obviously, there’s less moisture in the air, and it feels more comfortable to be outside in general. And so when the dew point is higher, the air is holding more moisture content and it feels more uncomfortable. The higher the dew point is, the greater the amount of moisture in the air. Look how much he is sweating! I have no idea why the US Open is played during the hottest and steamiest part of August. This is a picture of Rafael Nadal from the US Open a couple of weeks ago. Whereas the dew point, in a very basic sense: It’s the amount of moisture in the atmosphere. Relative humidity doesn’t help me fully understand what it’s going to feel like outside. Because it’s not - it’s literally relative to the temperature, so it’s not helpful. I think temperature is just as important with humidity, but relative humidity, like the relative humidity that’s on our weather apps, is just a total crock. Well, first of all, dew point is just a great measure of how it’s going to feel outside. What is the dew point, and why does it feel so good when it’s low? And I know that the weather feels better when the dew point is lower.īut I don’t get why, or what it is. The dew point is high today and it feels disgusting. I’m recently - in large part because of your Twitter feed - a dew point convert. Yeah, and I wanted to ask you about what makes it feel cooler. Right! Like a cooler rainy day is pretty nice. It feels like I’m in a low-temperature sauna. I think what makes it stink is that it’s very sticky outside. Sometimes I have to try really hard to keep what we need in terms of weather away from what the actual vibe is - today is definitely two out of five. In your words, the vibes in New York are awful today. New York Metro Weather has a 58,000-plus following that looks to it to answer a really simple question: Is the weather in New York City today going to be good or bad? Homenuk gives his followers a vibe rating out of 10 (sunny, humidity-free days score the highest) and sprinkles in a brief explanation of why it will or won’t be a pleasant day in New York.Īs Homenuk confirmed to me, not all 72☏ days are created equal - and the dew point might be the best explanation why. He’s the force behind the New York Metro Weather Twitter account. Homenuk, who studied meteorology at Kean University, is a dew point enthusiast and the reason I found out about dew point forecasts in the first place. In an effort to better explain why the dew point is the superior way to tell the weather and what it exactly means, I spoke with John Homenuk on a recent rainy, uncomfortably sweaty afternoon.
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