So, this works with temperatures down to freezing and below (don’t know what the cut off is, maybe there is none given this planet’s temperature range) and if you heat and dress appropriately (i.e. not up to super high temperatures – around 20°C or so – and if you have a sweater or jacket on or can put one on).

Obviously you also need the appropriate building for it. (So no fancy passive house. No fancy air conditioning – which is quite uncommon where I’m from anyway.)

Generally, if you only open the windows for five minutes or so the air will cool down substantially (the right moment to pull on that sweater) but everything else (walls, furniture) will not really cool down that much, meaning the room will be quick to be back at an appropriate temperature.

We learned and did this in school, often do it in offices and meeting rooms and also at home. Though, admittedly the temporary unpleasantness does frequently lead to people postponing opening the windows forever and ever. (Once every 90 minutes in a classroom setting might not be enough.)

In those settings a CO2 traffic light as an obvious visual indicator would be super helpful.