We’re now 1 month away from the big moment!
So what happens on 01 October 2025?
From 00:00 on 01 October 2025, the current restrictions around redistribution will be abolished for all Products in the ECMWF Real-time Catalogue! Otherwise, very little changes in terms of technical delivery.
The current IFS Open Dataset will continue in its current configuration with 1h latency and may be adjusted later in 2025 to include higher-resolution products.
This means users will be able to redistribute ECMWF unmodified products, including brokering, selling, etc.
The ECMWF Product Requirements Catalogue (PRC) has been updated so that if a user orders data after 01 October 2025, the Information Cost will automatically be removed.
If a user orders data between 01 July 2025 and 01 October 2025, the quote will be adjusted to calculate only the Information Cost for the period that it applies. Of course, if users wish to see the cost before Open Data, you can use an older version of ecQuote in the PRC when viewing the order.
Some key reminders:
- The products will be under the CC-BY-4 licence, which requires a clear attribution when using and sharing the Products.
- If you redistribute, broker, or otherwise sell ECMWF Products, you will be responsible for the support of users accessing data via your services.
For any enquiries regarding the Open Data Transition, please contact us via the Support Portal.