Temperatures.

[Mufflamingo]

Temperature during day and night should be different. Nights are colder, days are warmer. When measuring temperature shouldn't you measure it whether that tile has some shade or none? Example, a tree has a shade on its nearby tiles, this making it a good sleeping spot on early game when you don't have coolers during heatwaves.

Also, change the slept outside buff. Maybe it should be slept without roof. And add a trait outside lover who wants to sleep without any roof.

Just my suggestions. Don't kill me.

[Vaporisor]

There actually is day/night cycle temperature difference in game.  Different maps, it is more apparent.  The temp when shade/under roof vs open... That is a bit different.  In small size, the air temps would be the same abouts but one feels warmer.  The shadow temperature difference usually needs a massive effect to cause variation in ambient temp.

I agree that would be fun to get an outdoors lover trait.

[b0rsuk]

The effect of sun is not simulated. Not only nights are barely colder than days. Outdoors areas with rock roof are just as warm as those without roof.