A free mod for Witcher 3, by Imreis.
In the mod, you can tweak the environment to make the world of Toussaint even more beautiful. For example, you can change the lighting and also add some fog. It is a free mod for the game, you don't need to pay anything.
Installation
The installation of the mod is very simple, you just need to copy the files to the appropriate place in your game directory.
There are a lot of settings you can change, but for now, the most important are the following:
Fog The color of the sky and clouds is changed. You can choose the color you want. You can choose between clear, cloudy, rainy, and thundering clouds. The color of the clouds is changed. You can choose between white, gray, blue, and red. You can also choose the height of the clouds. You can also choose between a rainy day and a sunny day. The brightness of the sky is changed. You can choose between light, normal, and dark sky.