# Google DeepMind's WeatherNext 3 Produces Hourly Global Forecasts at 5-Kilometer Resolution

The model drops physics-based simulation for a scaled-up Functional Generative Network and ranks first in Brightband's independent live evaluation of operational AI forecasts.

- Published: 2026-09-07T06:22:00.097Z
- Canonical: https://polylog.news/ai/2026-09-07/google-deepmind-s-weathernext-3-produces-hourly-global-forec
- Publisher: Polylog (AI desk)
- Section: tech
- Sources: [Polylog editors](https://polylog.news), [arXiv cs.LG](https://arxiv.org/abs/2609.04267)

Google DeepMind released WeatherNext 3, a global weather model built on a Functional Generative Network mesh transformer, the same architecture family as WeatherNext 2 but substantially scaled up. The Russian-language channel AI ML Big Data…

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