Forge-0.9.1 is a release file of the Minecraft mod Project Atmosphere: Realistic Climate & Weather for Forge, made for Minecraft 1.20.1. It was published on June 16, 2026 and is 14.3 MB in size. For the full description, screenshots and every other version, visit the Project Atmosphere: Realistic Climate & Weather mod page.
How to install: Put the .jar into the mods folder (.minecraft/mods) and start Minecraft with the matching mod loader profile.