Weather 101: Humidity VS Dewpoint

Meteorologist Jen Carfagno explains the difference between humidity and dewpoint, two aspects of weather that are often confused.

[manardheyaa]

I don't know everyone in the comments saying it's confusing, I find it very helpful. Thank you!

[ergonautilus]

How can anyone pay attention with all the arbitrary sound effects and graphics?

[KoveytBud]

Started really confusing but then nailed it with the hands-on experiment. Kudos.

[TON-vzpe]

For those who are still confused. Relative humidity is the amount of water vapour in the air with respect to the actual water holding capacity of the air at a given temperature. Higher temperature can hold more water vapour. Lower temperature holds less. RH does not tell you how much water vapour is in thr air.

Dew point on the other hand tells you, for given amount of water vapour what is the lowest temperature at which the air gets fully saturated. This tells us how much vapour is actually in the air. At 50°C air temperature the dew point can be 45°C, if the RH is very high. This means there is no much vapour in the air that only a 5° C drop in temperature can result to 100% RH. Also, at 100% RH, the dew point is equal to the wet bulb temperature

[SaidAlSeveres]

I’ll never understand it lol but this video is probably the closest I’ll get to enlightenment on humidity vs dew point.

[GoldtopDude]

It is not yet noon here, however, I am going to begin a stringent drinking regiment throughout the remainder of the day, and evening Intel I am capable of recapitulating this information….thanks for the video…🥃🥃🥃🥃🥃

[BKbucknut]

I felt the Indian guy with the PowerPoint was more informative than this.

[PaulTar-zj]

Where is the 69 and 41 coming from in the video? (aka the calculations)

[tanytansters]

Terrible video, and the music made it worse.

[andrethegiant]

The dew point where I was working the other day was like 84. I felt like I was going to drown walking around 😂😢

[Michael_B]

I’m glad it’s not just me.
I’m more confused

[mariobotelho]

One minute "lesson" and you know less in the end.

[paulheckbert]

the animated graphics (text on swinging sign, with sound effect) is distracting and counterproductive

[jeffreydaclan]

dew point is a temperature degree where air moisture condense into liquid form its not an amount

[dawilliamsus]

Jen,

Thank you. There has been little success in me finding out why one day it could be 80° with a Relative Humidity of 60% and a Dew Point of 68° and I feel like I am trying to breathe in thick air. I struggle and have to limit my outdoor activities. So when they warn us to keep the elderly, small children, and people with respiratory and/or heart disease inside where the A/C can offer some relief - that's where I live.

Yet there are days that seem to be near as warm with a little lower humidity and a dew point around 50 and I can breathe great.

Thank you so very much for the graphics and the effort put into making this fun for kids of all ages. I hope to see more on these and other topics and I consider you the Dew Point guru of TWC and WU.

And please do not let the hecklers and bored people get you down. You are a well respected scientist and meteorologist with a pleasant brightness around everything you report and teach. Shine on my friend, SHINE ON.

Best Regards,
Dave and Cathy Williams

[rmeredithm]

Great for definitions…. Less great for an indepth understanding. Can’t expect much from a 1:09 video

[sdnlawrence]

Left out the important points: RH is measured.
DP is a calculated.
Scientists favor RH (and Hg.)
TV weather casters like DP for some unknown reason.

[alertbox]

Why add music? It's a big distraction. 0:47 she gabbles too fast and doesn't explain dew point properly. This video could easily have been so much better. Meanwhile, I'm searching for another explanation of dew point.

[beechcoma]

Jen Carfagno is awesome. I remember her first appearing overnights on the Weather Channel. This video though is absolutely no help. 🤷‍♂️🤦‍♂️🤣

[kreese]

Please do a part B with a little more detail and speaking a tad slower.

How is the air (humidity and dew point and whatever else contributes to how it feels) different in lets say Portland, Oregon as compared to Pensacola, Florida?

This may be a different topic, but how is much of Texas so dry on the ground and with fewer lush plants, yet they call it humid?