The built-in Weather app in Windows 11 consumes over 1 GB of RAM, which is significantly more than Apple's native Weather app on macOS. This high memory usage is due to the app being built on Microsoft's WebView2 framework, which runs multiple Chromium-based subprocesses. The app's memory footprint can have a noticeable impact on entry-level systems with limited RAM. The issue has sparked discussion about the efficiency of modern software and the trade-offs between features and resource usage.