Fog + Exclude Skydome setup

Hey ArtistArtorias,

Take a look at our Documentation on Atmosphere Fog, as I believe this is what you are looking for.

Atmospheric Fog

https://docs.unrealengine.com/latest/INT/Engine/Actors/FogEffects/AtmosphericFog/index.html

Once you find the right values for this actor placed in your scene, the Atmospheric Fog can add a great degree of realism to your scene.

Cheers,