You can make daytime and sunset clouds, as well as a starry sky for night scenes. According to the developers, the effects are based on atmospheric science, so light, haze, and color behave naturally. You can set the date, time, and location to get the exact positions of the sun and the moon.
The clouds and the atmosphere respond to the objects in a scene, with real occlusion and shadows, and not just a flat backdrop. The controls are made to be simple and intuitive. For more precise work, the advanced mode opens the physics parameters, such as scattering, ozone, and fog.
The Physical Addons team has 22 years of experience. The team keeps improving its add-ons, expanding their capabilities and supporting the latest Blender releases. Users can also get help from the team and its community on Discord.