# Archive data from CAMS European air quality forecasts unavailable from 17 to 19 November 2025

**URL:** <https://forum.ecmwf.int/t/archive-data-from-cams-european-air-quality-forecasts-unavailable-from-17-to-19-november-2025/14412>\
**Category:** CAMS - Announcements\
**Tags:** cams, european\_forecast, ads\
**Created:** [14 November 2025 11:00 UTC](https://forum.ecmwf.int/t/archive-data-from-cams-european-air-quality-forecasts-unavailable-from-17-to-19-november-2025/14412 "2025-11-14T11:00:00Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Michela](https://forum.ecmwf.int/letter_avatar_proxy/v4/letter/m/898d66/32.png) [@Michela](https://forum.ecmwf.int/u/Michela)\
**Post date:** [14 November 2025 11:00 UTC](https://forum.ecmwf.int/t/archive-data-from-cams-european-air-quality-forecasts-unavailable-from-17-to-19-november-2025/14412/1 "2025-11-14T11:00:00Z")

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We would like to inform users that archive data from the [CAMS European air quality forecasts](https://ads.atmosphere.copernicus.eu/datasets/cams-europe-air-quality-forecasts?tab=overview) on the Atmosphere Data Store (ADS) will be unavailable from 17 to 19 November 2025 due to maintenance.

The maintenance session will begin on 17 November morning and it is expected to be completed by 19 November but may extend into November 20.

For any enquiries regarding this dataset or the application, please [contact us](https://confluence.ecmwf.int/site/support).

ECMWF Support

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**Author:** ![Pierre\_Loicq](https://forum.ecmwf.int/letter_avatar_proxy/v4/letter/p/e68b1a/32.png) [@Pierre\_Loicq](https://forum.ecmwf.int/u/Pierre_Loicq)\
**Post date:** [24 November 2025 08:54 UTC](https://forum.ecmwf.int/t/archive-data-from-cams-european-air-quality-forecasts-unavailable-from-17-to-19-november-2025/14412/2 "2025-11-24T08:54:41Z")

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Hi,

I do not know if this is related to the above mentioned maintenance, but data for the 16 November stays unavailable via both the GUI and the API.

Thank you

 ![image](https://forum.ecmwf.int/uploads/default/original/2X/1/18f07ced713892b66579b227f60009f0c0127829.png)

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**Author:** ![Luke\_Jones](https://forum.ecmwf.int/letter_avatar_proxy/v4/letter/l/e0b2c6/32.png) [@Luke\_Jones](https://forum.ecmwf.int/u/Luke_Jones)\
**Post date:** [24 November 2025 15:44 UTC](https://forum.ecmwf.int/t/archive-data-from-cams-european-air-quality-forecasts-unavailable-from-17-to-19-november-2025/14412/3 "2025-11-24T15:44:02Z")

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Hi Pierre,

Thanks for pointing this out. I’ll contact the data providers to get this fixed.

Luke.

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**Author:** ![Luke\_Jones](https://forum.ecmwf.int/letter_avatar_proxy/v4/letter/l/e0b2c6/32.png) [@Luke\_Jones](https://forum.ecmwf.int/u/Luke_Jones)\
**Post date:** [24 November 2025 16:27 UTC](https://forum.ecmwf.int/t/archive-data-from-cams-european-air-quality-forecasts-unavailable-from-17-to-19-november-2025/14412/4 "2025-11-24T16:27:22Z")

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Hi Pierre,

That’s fixed now. Thanks for letting us know!

Luke.