Dew point 70 but humidity 47 — wet bulb 70 — why does it feel so hot when humidity seems low?

[Anonymous]

So CWG got me turned into dew point years ago, and 70 is definitely on the edge of sultry. But I’m surprised to see such low humidity of 47% with such high dew point. I’ve googled and Wikipedia but haven’t found a good explanation of how they relate.

I hear the new new thing is the wet bulb temp, which is 70 today — which is the edge of where it gets uncomfortable.

Either way I feel more uncomfortable today than several weeks ago that were warmer, but maybe it’s me.

I use Apple Weather (RIP Dark Sky), WeatherBug, and Carrot apps

[Anonymous]

The hotter it is, the more moisture the air can hold. If the air has 47% humidity when it is cold, that is much less water in the air than 47% humidity when it is warm. Dew point is always going to be the objective measure, I believe. I do think that if today is more awful for you it might just be you getting sick of this heat (that's how I feel anyway).

[Anonymous]

Anonymous wrote:The hotter it is, the more moisture the air can hold. If the air has 47% humidity when it is cold, that is much less water in the air than 47% humidity when it is warm. Dew point is always going to be the objective measure, I believe. I do think that if today is more awful for you it might just be you getting sick of this heat (that's how I feel anyway).

Haha yeah it’s actually better today than earlier this week I think, but feels worse than the hot days we had last month.

[Anonymous]

God, I hate summer. I hate going outside for 2 minutes and then feeling like I need to take a shower.