The question pretty much sums it up. How TF is the asphalt 20-40° hotter than the air when it’s super hot?
In: 531
So, the reason why things get hot is the sun. Not the air.
The air, in fact, is transparent, so it’s that one thing that doesn’t get hot in the sun. Sunlight passes right through it.
Air gets hot by being near objects that are hotter than it.
Like concrete.
That’s why you need to wear some layers if you go in altitude. But air gets hot in any flat space. It gets hot from being near the hot ground, which gets hot from the sun.
So, ground in the sun will always be hotter than the air.
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