Hi there!
I'm making this thread for my volumetric sky plugin, OverCloud, which is a complete lighting and sky solution for Unity's default rendering pipeline. Featuring volumetric clouds, fog and lighting, physically based time of day, multiple weather effects, a preset-based sky system and VR support.
It has been released and is available (along with demos) at http://overcloud.me/...
[released] Overcloud - Volumetric Sky And Lighting