Observed Signal · Aug 10, 2026 · Technical Issue · Source: t3n · Impact: 1/5 · Sentiment: Negative
Application Performance Market: Windows 11 Weather App Slows PCs
Tests reported by Windows Latest and summarized by t3n show that the Windows 11 Weather app can consume unusually high system resources — up to about 1.2 GB of RAM and roughly 16.5% CPU even in idle on the tested system. The article attributes the resource usage to the app being implemented as a Web wrapper that loads an MSN Weather web view and spawns multiple subprocesses. By comparison, Apple’s Weather app on macOS used roughly 250 MB RAM idle and much lower CPU in the same tests. Microsoft previously updated the app (summer 2024) and has said it will replace some web apps with native versions, but it is unclear whether the Weather app will be migrated.
A consumer-facing application performance issue limited to a single OS app; low direct impact on broader AdTech/MarTech operations though relevant where webview-wrapped apps deliver ad content.
Key Takeaways & Evidence Grounding
- Windows 11 Weather app was measured using up to 1.2 GB of RAM and about 16.5% CPU on a test system while idle.
- The app groups nine subprocesses under a process named 'Weather' including Renderer and GPU Process.
- The Windows Weather app is implemented as a Web application that loads an MSN Weather web view (essentially a browser window wrapped as an app).
- In the same comparison, Apple’s Weather app on macOS used around 250 MB RAM idle and about 1.3% CPU in idle on a MacBook Air M2.
- The issue was reported by Windows Latest and published on t3n.de on 2026-08-10.
Connected Companies & Entities
6 Entities mappedTargetVideo
Publisher video platform and premium video advertising sales business.
“Here you will find external content from TargetVideo GmbH that complements our editorial offering on t3n.de....”
Windows Latest
Microsoft-focused technology news publisher and audience platform.
“Now there is a new problem, as Windows Latest reports....”
Shutterstock
Licensing marketplace for stock media, design tools and creative services.
“Image credit: Shutterstock/dennizn....”
Apple
Consumer electronics giant with integrated software, services and advertising platforms.
“For comparison, Windows Latest used Apple's Weather app on macOS....”
t3n
German tech publisher monetising audience, subscriptions and media sales.
“Article published on t3n.de (t3n – digital pioneers)....”
Microsoft
Diversified software, cloud, advertising and gaming platform company.
“It began when Microsoft released an update for the application in summer 2024....”
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