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Open data

A subset of ECMWF real-time forecast data from the IFS and AIFS models is made available to the public free of charge. Their use is governed by the Creative Commons CC-BY-4.0 licence and the ECMWF Terms of Use.

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AIFS Machine Learning data

ECMWF is now running version 2 of its Artificial Intelligence Forecasting System (AIFS). The AIFS consists of a deterministic model, AIFS Single, and an ensemble model, AIFS ENS.

The deterministic model has been running operationally since 25 February 2025 and was upgraded from AIFS Single v1.1 to AIFS Single v2 on 12 May 2026. Further details can be found on the dedicated Implementation of AIFS Single v1 page.

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Datasets for African Center of Meteorological Application for Development (ACMAD)

These products are available to the African Center of Meteorological Application for Development (ACMAD) countries.

Based on HRES

The products outlined below are disseminated via EUMETCast

Please refer to WMO Additional products  for the equivalent products available on a global domain via the ECMWF's DCPC FTP server.

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Atmospheric Model Sub-seasonal forecast, VI-vi-c: Probabilities - Probability distributions

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Atmospheric Model Sub-seasonal forecast, VI-vi-d: Probabilities - Probability boundaries

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Atmospheric Model Sub-seasonal forecast, VI-vii-a: Extreme Forecast Index (EFI)

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Atmospheric Model Sub-seasonal forecast, VI-vii-b: Shift of Tails (SOT)

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CAMS Global Atmospheric Composition Forecast (5 days), XI-i-a: Single levels aerosol

Surface aerosol parameters from the CAMS global forecasting system. The products are available every hour.

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CAMS Global Atmospheric Composition Forecast (5 days), XI-i-b: Single levels chemical

Surface chemical parameters from the CAMS global forecasting system. The products are available every hour.

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CAMS Global Atmospheric Composition Forecast (5 days), XI-i-c: Single levels meteorological

Surface meteorological parameters from the CAMS global forecasting system. The products are available every hour.

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CAMS Global Atmospheric Composition Forecast (5 days), XI-i-d: Pressure levels aerosol

Pressure levels aerosol parameters from the from the CAMS global forecasting system. The products are available every 3 hours.

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CAMS Global Atmospheric Composition Forecast (5 days), XI-i-e: Pressure levels chemical

Pressure levels chemical parameters from the from the CAMS global forecasting system. The products are available every 3 hours.

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CAMS Global Atmospheric Composition Forecast (5 days), XI-i-f: Pressure levels meteorological

Pressure levels meteorological parameters from the from the CAMS global forecasting system. The products are available every 3 hours.

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CAMS Global Atmospheric Composition Forecast (5 days), XI-i-g: Model levels aerosol

Model levels aerosol parameters from the from the CAMS global forecasting system. The products are available every 3 hours. With the implementation of the IFS Cycle 50r1 a subset of model levels forecast fields is available every hourly step.

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CAMS Global Atmospheric Composition Forecast (5 days), XI-i-h: Model levels chemical

Model levels chemical parameters from the from the CAMS global forecasting system. The products are available every 3 hours. With the implementation of the IFS Cycle 50r1 a subset of model levels forecast fields is available every hourly step.

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CAMS Global Atmospheric Composition Forecast (5 days), XI-i-i: Model levels meteorological

Model levels meteorological parameters from the from the CAMS global forecasting system. The products are available every 3 hours. With the implementation of the IFS Cycle 50r1 a subset of model levels forecast fields is available every hourly step.

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WMO Support Dataset (formerly SOFF Dataset)

ECMWF has adopted an open data policy, with the objective of expanding free and equitable access to high‑quality numerical weather prediction data for the global meteorological community. This shift supports the socio‑economic benefits of weather and climate information and aligns with WMO policies on international data exchange and capacity development for National Meteorological and Hydrological Services (NMHSs).

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Deterministic AIFS forecast (up to 15 days), IX-i-a: Surface level

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Deterministic AIFS forecast (up to 15 days), IX-i-b: Pressure level

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Deterministic AIFS forecast (up to 15 days), IX-i-e: Soil level

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Deterministic AIFS forecast (up to 15 days), IX-ii: Tropical cyclone tracks

Tropical cyclone tracks are provided in BUFR format. These data will only be disseminated when a tropical cyclone is active.

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AIFS Single wave, XII-i-a: Single level

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Atmospheric Model Ensemble 15-day forecast (ENS), III-i-a: Atmospheric fields - Single level

The products consist of control and perturbed forecasts plus the equivalent deterministic products. The deterministic product is suppressed beyond day 10. The fields are provided in GRIB code.

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Atmospheric Model Ensemble 15-day forecast (ENS), III-i-b: Atmospheric fields - Pressure levels

The products consist of control and perturbed forecasts plus the equivalent deterministic products. The deterministic product is suppressed beyond day 10. The fields are provided in GRIB code.

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Atmospheric Model Ensemble 15-day forecast (ENS), III-i-c: Atmospheric fields - Model levels

The products consist of control and perturbed forecasts plus the equivalent deterministic products. The deterministic product is suppressed beyond day 10. The fields are provided in GRIB code.

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