Google DeepMind’s WeatherNext 3 learns from live satellite data
Hourly 5 km global forecasts and up to 60% better precipitation skill
Result confirmed
Importance: major (4 of 5)The takeaway
On Sept 3, 2026 Google DeepMind and Google Research released WeatherNext 3.
Status
- Claim
Result confirmed
- Our reporting
- High confidence
- Verification
- Expert-checked
- Importance
- Major (4 of 5)
- Last verified
- 7 October 2026
Your AI and this story
- GPT-6 Astra126 days after its cutoff
- Claude Opus 5.565 days after its cutoff
- Gemini 4 Hydrogen156 days after its cutoff
- Grok 4.795 days after its cutoff
None of these four assistants can know about it. The closest, Claude Opus 5.5, stops 65 days before it.
Key facts
- Announced Sept 3, 2026; paper arXiv 2609.03582
- Inputs: live 1-hour geostationary satellite mosaics plus historical analysis, into a single Functional Generative Network (FGN) mesh transformer
- Hourly forecasts; 5 km for key surface variables, 10 km for other surface variables, 25 km for atmospheric variables (WeatherNext 2: 25 km, 6-hourly)
- Precipitation CRPS improvement up to 60% vs IMERG, 30% vs MRMS, 10% vs rain gauges at early lead times; up to 50% more accurate precipitation forecasts a day or more ahead for users
- New clean-energy variables: 100 m wind speed, cloud cover, surface solar radiation
- Ranked top on Brightband’s live Operational WeatherBench, per Google; deployed in Search, Gemini, Maps, Maps Platform Weather API, Earth Engine, BigQuery
What happened
DeepMind’s weather model stopped depending only on physics-model reanalysis and learns directly from real-time observations, which removes the six-hour data lag of numerical weather prediction.
Why it matters
It is a step from AI emulating weather simulators to AI forecasting from raw observations, with global 5 km detail that regions without supercomputing budgets have lacked.
Sources
5 sources from 5 sites. Numbers match the chips in the text.
5 sources: 4 primary, 1 press
Primary
- Google: Introducing WeatherNext 3blog.google, official
- arXiv 2609.03582: WeatherNext 3arxiv.org, paper
- Brightband Operational WeatherBench live leaderboardowb.brightband.com, docs
- Google DeepMind: Introducing WeatherNext 3deepmind.google, official
Press
- TechCrunch: Google’s latest AI weather modeltechcrunch.com, press
Changes
- Science block: kind: other (not a long-open problem; listed with other AI science results, not in the open-problems count)
- Added DeepMind blog link
- Filed
