It all depends on humidity. I used to live in the US South where humidity would be >90% and 78F is unbearable. I live in Colorado now and the humidity here barely goes above 10-15% and the same temp is way more comfortable.

I live in Buenos Aires and 25°C is with air conditioner is perfectly tolerable. The official recommendation here is 24°(75°F), but at my home we keep the thermostat at 26°C (79°F) and sometimes more.

The air conditioner acts as a dehumidifier, so 26°C is nice, but you must change the water deposit of the AC quite frequently.

Dude the humidity is definitely over 10-15%. That would be seriously dehydrating and also unbearable. I think you mean the humidity is around 40%

It can vary depending on where in the state you are. The average humidity in Denver is 37% year-round, but in Boulder it apparently averages 0%.

[0] https://weatherspark.com/y/3561/Average-Weather-in-Boulder-C...

That has to be an error. Even in deep winter ice rapidly sublimates when the vapor pressure of water is low

I think you must be right - currently, they are experiencing 13% humidity. Compared to Denver, that is still kind of suprising. https://www.wunderground.com/weather/us/co/boulder/80301

It's easy enough to confirm. You can go to weather.gov and get current conditions anywhere in the US.

https://forecast.weather.gov/MapClick.php?textField1=40.02&t...

Currently 14% humidity in Boulder, CO.

While I grew up in the US South, in a house without A/C. >90% and 78F sounds like a cool summer evening.

Hah, I'm right! In Tallahassee right now it's 82°F and 81% humidity, with a dew point of 76°F. At 5am tomorrow morning the temp will be down to 78°F. If you're out that early there will likely be fog in the low spots.

ngl this is a large part of why I migrated from Atlanta -> Denver a few years ago.