Atmos (for Blender 4.2.1 LTS)

ATTENTION: Amos does not create environment, it adds atmospheric haze to your scene. So if you have nothing in your scene, no visible difference might be noticed.

1. Overcoming the limitation of Volumetric-based Real-time Atmospheric Haze system:
Allows for real-time sky replacement.
(Warning: Atmos doesn't come with built-in sky. It would be best to use HDRI or Blender's built-in Sky Texture.)
 
 
2. Ability to Fine-tune Real-time Atmospheric Haze:
Scale the "Atmosphere" object to fine-tune your real-time atmospheric haze. 
 
3. Rendering Speed Improvement in Some Cases:
Caution: If you have an incredible number of materials in your scene, traditional volumetric solutions could be faster (about 20%). On the other hand, since Atmos doesn't need to worry about volumetric noise, you might need fewer samples for cleaner renders after all. Make a test render before you decide which options to use. Newer versions of Atmos (version 1.0.2 or later) will have one-click(?) Volumetric setup button as well.

Since Atmos needs to do extra depth calculations for all materials, Atmos could have the upper hand in geometry-heavy scenes having a limited number of materials, as shown below.
 
4. Easy to Use
 
5. Add/Delete/Export/Import as Presets