Ultra Dynamic Sky is a sky system designed to be more dynamic and natural than most sky solutions, offer a great degree of flexibility and customization options, with an interface designed for speed and simplicity.

Features
• Set a single Time of Day variable and have every aspect of the sky update along with it, making changing the time your scene takes place a one step process.

• Fully dynamic, with customizable clouds, moon and stars.

• A built in lighting solution with sun, moon and sky lighting all synced with the sky.

• Adjust cloud coverage from a clear sky to overcast.

• Animate a day/night cycle with a single click.

• Dynamic aurora effects

• Multiplayer ready

• Choose from volumetric 3D clouds, 2D dynamic clouds, static clouds, and even volumetric auroras.

• A full weather system is included, Ultra Dynamic Weather, which adds rain, snow, lightning, and more to your scene in seconds.

• Enable Simulation features, which calculate the real world position of the Sun, Moon and Stars, using latitude, longitude, date and time.

Note for 4.8 to 4.25:

Please refer to the image above labelled Features by Version for the major points of what is included in older versions. For a look at the older versions, see the old product videos here: 4.24 to 4.25 and 4.8 to 4.23

Version 9.0A Hotfix
For UE 5.5 and 5.6
Fixed UDW causing levels to show as having unsaved changes incorrectly when weather effects are active in the editor viewport when level editor tick is enabled.
Fixed Cloud Light Color tint settings for simplified color not being applied to 2D/static clouds as intended.
Fixed a warning message about a missing file when starting some weather effects in PIE

Version 9.0
For UE 5.5 and 5.6
Sky
Simplified Color has been reworked. It now very closely matches the sky atmosphere in most contexts with default settings, while still being adjustable with its color tint settings in the same ways as before. Note the old approach with the atmospheric scattering LUT texture has been replaced with sun and moon LUT volume textures formatted differently.
Since changes in 5.5 made the cloud rendering mode UDS exposes as “Background Only Clouds” not strictly limited to the background anymore, the names and descriptions of the volumetric cloud rendering modes have been rewritten to better communicate their behavior in 5.5.
Feature Levels on UDS for “Mobile Forward” and “Mobile Deferred” have been combined into one Mobile option. The system now sees if forward or deferred is in use by querying the project configuration.
Improved logic for Directional Lights Absent Brightness, to get more consistently scaled brightness with different modes and settings
Added an option to the Space Planet struct to make the planet render as just a ring around the local planet. A new planet preset is included as an example.
Improved behavior of path tracer fog post process in heavy fog, when used with volumetric fog enabled
2D Cloud Shadows will now project at an angle consistent with the sun/moon orientation, instead of straight down by default. This is adjustable with a new setting in Cloud Shadows.
Some changes to reduce rendering artifacts with volumetric fog and volumetric clouds together
Added a static overcast sky texture to the static clouds for more natural overcast skies in that mode. The texture can be adjusted or replaced in the Static Clouds category.
etc

NOTE: THIS IS THE LATEST UPDATE 9.0A RELEASED ON 10 June 2025 – Download for free from VfxMed or Aeblender!