How i can create fog effect like we are in really high places ?

How i can create fog effect like we are in really high places ? Its like skyscrapers or everest mountain, can you help me on this please ? I just want to cover landscape,

a simple solution is to use Exponential Height Fog found in the modes panel.

I have been driving the fog values based on night day cycle and actor Z on landscape.
that way the higher you are the more the fog seems to hug the landscape. But it also clears off almost entirely around high noon - sort of like IRL.

because this effect is purely visual for the player, I think it could be implemented without any network replication or worry about what someone else sees on the map.