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PMWU-AOMinecraft mod for 1.21.1

PMWU-AO (Atmospheric Overhaul) completely overhauls the atmosphere storms spawn in, and how they behave.

newest supported 1.21.1
Latest version
2.2.1
Minecraft
1.21.1
Java
Java 21+
Loader
NeoForge
Licence
LicenseRef-All-Rights-Reserved
Downloads
5.6k
Updated
2 mo ago
Available on
Modrinth
Space NodeOur hosting

Host PMWU-AO servers

One click and PMWU-AO is installed with the right loader, on hardware built for it.

  • 1.21.1
  • NeoForge
  • One click mod install
  • Loader matched for you
  • Ryzen CPUs
  • NVMe SSD
Deploy a serverFrom €0.90 per GB

Minecraft versions

Every version PMWU-AO declares support for, newest first, with the Java runtime that version needs.

Other mods
MinecraftThroughJavaEvidenceReleased
1.21.1NeoForge21+declared8 Aug 2024

Download

From PMWU-AO’s own host. Nothing is re-hosted here.

2.2.1release25 Jul 2026

pmwu-ao-2.2.1.jar · 14.1 MB · for 1.21.1

Download latest
a7aa02239c4b…
Older versions5
  • 2.2.06 Jul 20261.21.114.1 MB584 downloads7f83b6978d0d…Get
  • 2.1.029 Jun 20261.21.114.0 MB269 downloads101c09b7a160…Get
  • 2.0.016 Jun 20261.21.114.0 MB454 downloadsf59dcd25c5f2…Get
  • 1.0.07 May 20261.21.18.9 MB709 downloads94b217e6fa70…Get
  • 1.1.011 Jan 20261.21.10.4 MB3.4k downloads1d24523047b7…Get

Frequently asked

Does PMWU-AO work on Minecraft 1.21.1?

Yes. 1.21.1 is the newest Minecraft version PMWU-AO declares support for, and the claim comes from the author's own release metadata rather than from a compatibility list somebody maintains by hand.

Which platform or loader does PMWU-AO support?

NeoForge. A build for one platform or loader will not necessarily load on another, so this is the first thing to check before the Minecraft version.

Which Java version do I need for PMWU-AO?

On the newest Minecraft version it supports, Java 21 or newer. The requirement comes from the Minecraft version you run rather than from the mod itself, so on an older supported Minecraft the answer is that version's Java, not this one.

What licence is PMWU-AO under?

LicenseRef-All-Rights-Reserved, as stated by the author on the platform we synced it from. Check the project's own page before redistributing or bundling it.

How do I install PMWU-AO?

Install the matching loader first, then put the downloaded file in your mods folder and start the game. The loader, the mod and Minecraft all have to be on the same version, which is the usual reason a mod does not appear in game.

Where do I download PMWU-AO safely?

Start with the author's page on Modrinth, which is where the data here is synced from. MCReference does not host or repackage files. The download link goes to the source recorded for that release; verify the publisher, filename and checksum before running it.

Works on the same versions

Ordered by how much of the recent Minecraft version coverage overlaps, not by popularity.

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Details from Modrinth, where the author last updated it on 25 Jul 2026. We do not host files and we do not republish descriptions; every download link points at the author’s own release.

Is this information wrong or missing something? .