In the latest Mozilla Firefox 127 release simply do the following:

  • Go to about:config in a new tab
  • ‘Accept Risk and Continue’
  • Search for browser.newtabpage.activity-stream.system.showWeather
  • Double-click the result to enable the feature
  • Vash63@lemmy.world
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    6 days ago

    Knowing Mozilla it’s probably done client side (meaning it sends weather data for all major regions or something and the client filters what is needed)