**Note:** Effective **July 29, 2026**, the WeatherNext Gen and WeatherNext Graph
datasets on Earth Engine and BigQuery are deprecated.

**Migration Path:** All users should transition to
**[WeatherNext 3](https://developers.google.com/weathernext/guides/models)** datasets, which offer higher
resolution, hourly initialization, and expanded variable coverage. WeatherNext 2
datasets also remain available.

- **Getting Started:** See the [Quick start guide](https://developers.google.com/weathernext/guides/access-forecast) to explore all available access methods for WeatherNext 3 forecast data, including BigQuery, Earth Engine, and Google Cloud Storage.
- **Deterministic Forecasts:** For users that prefer working with deterministic forecasts over probabilistic forecasts, real-time and historical (backfill of 2022-present) ensemble mean datasets are available on Earth Engine, BigQuery, and Google Cloud Storage. These were first launched on **May 11, 2026** for WeatherNext 2 Mean, and are also available for WeatherNext 3.
- **Access Permissions:** Users on the allowlist for WeatherNext Graph and WeatherNext Gen automatically have access to all available datasets, including WeatherNext 3, WeatherNext 2, and WeatherNext 2 Mean.

**Performance Note:** Following ECMWF's [IFS Cycle 50r1
update](https://forum.ecmwf.int/t/ifs-cycle-50r1-and-aifs-v2-implementation-planned-for-12-may-2026/14781)
on May 12, 2026, WeatherNext 2 users may experience some accuracy
regression. WeatherNext 3 was trained with post-IFS-update data and is not
affected by this change. We recommend migrating to WeatherNext 3 for the best
forecast quality.