Detail this asset from Unity Store: Original Link
This is a paid asset, but now you can download Fog Volume 3 Free.
Fog Volume 3 v3.4
Fog Volume v2.0a5
Fog Volume 3 is a volumetric fog renderer designed to model a wide range of atmospheric effects. It offers a great deal of control to help you tune to your needs in both looks and performance. Compared with Version 2 there are major leaps in visual appearance and flexibility. Check the documentation for more detailed info.
Light Halo
Self Shadows
In-scattering
Point lights
Volume shadows
Projected soft shadows
Cloud animation
Light absorption
Lambert Diffuse
Distance fields
SCENES
INFINITE CLOUD
In this case we have an example of generic cloudscape that can be used as preset or starting point.
Camera is flying through the cloud automatically.
INTERIOR
PRIMITIVES
This scene shows how we can use primitives to define the noise boundaries.
We also see how GI and lights are used to light the fog
This scene is using 2 volumes
Clouds
Which casts shadows
Ground clouds + fog
receives shadows
clouds defined with distance fields.
Light behaves in a very interesting way here. We can see dramatic changes going from sunny to cloudy without animating any parameter.
The goal of this scene was to debug shadows. Clouds are quite sharp and bright. Probably a good preset for you.
The terrain is white to make the scene shadows more visible.
Night scene featuring light source halo and light absorption.
Cloud animation is especially interesting in this demo.
Animated sequence for dynamic sun rotation. Commonly known as time-of-the-day transition.
This scene is a bit more costly than a normal situation because of the cotton candy look. The cloud edges are larger than it should, and this makes this cloud more expensive . In production we would have shorter edges.
Sky background is Unity procedural sky. Clouds and fog are generated with a single Fog Volume.
Cubed version of the scene ‘Scotland’.
I tried to make a glass box with a living scenery inside.
As soon as the camera gets inside of the box, what was a mockup turns out into a big scale world.
In this case, a textured fog volume is used as density data for the camera effect.
This is not recommended because it has to be rendered twice.
Fog Volume is not a sky simulator.
Albeit you can render pretty convincing clouds, it was not designed as a sky renderer system or time of the day suite.
Color won’t change with light angle.