This mod will pretty much remove all that ugly fog you see everywhere indoors and will look a million times better.
Compared to the skyrim one, i pretty used the same settings for the fog and just copied each one on cells that have a name attached to it.
You can either install this with Nexus Mod Manager or the one i like to use Fallout 4 Mod Manager. orrrrrrrrrrrrr manual. Place esp in data folder and edit Plugin.txt put Remove Interior Fog.esp on the list and saved it as read only. Plugin.txt should be in C:\Users\USERNAME\AppData\Local\Fallout4
This Does not effect areas like diamond city, that is considered a world instead of a cell