Quick Clouds & Fog is a Blender add-on from Alexandr Zhuravlev for creating fog, clouds, and haze. It covers a wide range, from a single cloud to an entire cloud array, and can produce various types of fog including cosmic nebulae. The add-on is aimed at adding atmospheric depth to a scene's backdrop.
The library includes more than 80 high-quality presets that apply with one click, along with 10 ready-made scenes for training. Three types of noise with layered overlay expand the possibilities, and a global mask offers additional control. The settings are intuitive throughout.
The add-on is specifically designed to work with the EEVEE engine, making it suitable for scenes with animation. Presets ending in the letter E are configured for EEVEE, while presets without that letter were created for Cycles — those will display in EEVEE but appear slightly different. A Documentation section provides detailed instructions on how to use the add-on.