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. This means that the data may be redistributed and used commercially, subject to appropriate attribution.

Accessing this data, or arranging for any open data to be delivered directly to you, may be subject to Service Charges and a Service Agreement. If you are interested in this, please see our Service Agreement and Use Cases page.

For more information, please refer to the User Documentation or visit the ECMWF Support Portal.

This page outlines the subset of free and open IFS and AIFS parameters available.