WeatherNext 2: Google releases its latest weather forecast model

Google’s WeatherNext 2 can to provide hourly forecasts and 15-day weather predictions that are supposed to be more accurate.

Google introduced its first AI weather forecasting model in March, 2025. Now, the company has released WeatherNext 2, an updated model that can generate weather forecasts eight times faster and with a resolution of up to one hour.

The company announced that the new model is now available in Earth Engine, a catalog of satellite imagery and geospatial datasets, as well as BigQuery, Google’s AI-ready data platform, which helps manage and analyze data.

WeatherNext 2 technology is also used for weather forecasts in Search, Gemini, and Pixel Weather. Soon, the technology will also be used for weather information in Google Maps.

The company states that the new weather forecasting technology can provide “higher-resolution predictions, down to one hour,” also noting that it outperforms the previous WeatherNext model in 99.9% of variables, including wind, temperature, and humidity.

WeatherNext 2 can also provide hundreds of possible weather-related outcomes from a single starting point.

The company revealed that while the new technology, based on Google’s TPU chips, can generate a prediction in under a minute, such a task would take hours for physics-based models on a supercomputer.

To speed things up, the company adopted an approach called Functional Generative Network (FGN), which enhances the efficiency of the new WeatherNext 2 by injecting “noise directly into the model architecture so the forecasts it generates remain physically realistic and interconnected.”

WeatherNext 2 can create hourly forecasts and provide 15-day weather predictions.

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