Sky is a procedural sky and volumetric cloud generator built using Geometry Nodes and procedural shaders. It provides an earth atmosphere model and generates clouds at real-world scale with physically based shaders incorporating accurate air and water particle sizes.

The system allows you to animate cloud movement, alter coverage, and adjust the overall look. It includes four distinct cloud types: Cumulus, Cumulonimbus, Cirrus, and Altocumulus. The volumetric rendering requires significant computational power, and hardware-accelerated raytracing is recommended.