Information pursuant to § 5 DDG (German Digital Services Act)

Franz und Franz GmbH

Dieckbornstraße 42

30449 Hannover

Germany

Represented by the managing directors Kristina Franz and Georg Franz

Contact

Telephone: +49 511 897 36 001

Email: [email protected]

Office hours: Monday to Friday, 10:00 to 18:00 (CET/CEST)

Commercial register

Registered in the commercial register

Registration number: HRB 208421

VAT identification number

VAT identification number pursuant to § 27a of the German VAT Act (UStG): DE282868921

Responsible for content pursuant to § 18 (2) MStV (German State Media Treaty)

Georg Franz

Dieckbornstraße 42

30449 Hannover, Germany

Consumer dispute resolution

We are neither willing nor obliged to participate in dispute resolution proceedings before a consumer arbitration board (§ 36 VSBG, German Consumer Dispute Resolution Act).

Liability for content

The content of this website has been created with the greatest care. However, no guarantee can be given for the accuracy, completeness or timeliness of the content. As a service provider we are responsible for our own content on these pages under general law pursuant to § 7 (1) DDG. Pursuant to §§ 8 to 10 DDG, however, we are not obliged to monitor transmitted or stored third-party information or to investigate circumstances that indicate illegal activity. Obligations to remove or block the use of information under general law remain unaffected. Liability in this respect is only possible from the time we become aware of a specific infringement. Upon becoming aware of such infringements we will remove the content in question immediately.

Liability for links

This website contains links to external third-party websites over whose content we have no influence. We therefore cannot accept any liability for this third-party content. The respective provider or operator of the pages is always responsible for the content of the linked pages. The linked pages were checked for possible legal violations at the time of linking. Illegal content was not identifiable at the time of linking. Permanent monitoring of the content of the linked pages is not reasonable without concrete indications of a legal violation. Upon becoming aware of legal violations we will remove such links immediately.

Copyright

The content and works created by the operator on these pages are subject to German copyright law. Reproduction, editing, distribution and any kind of use beyond the limits of copyright law require the written consent of the respective author or creator. Downloads and copies of this site are only permitted for private, non-commercial use. Where the content on this site was not created by the operator, the copyrights of third parties are respected. Should you nevertheless become aware of a copyright infringement, please notify us. Upon becoming aware of legal violations we will remove such content immediately.

Logo, illustrations and graphics: Franz und Franz GmbH.

Weather data and sources

This website shows everything that is available in weather data for Hannover. So that it is clear where each number comes from, here are the sources in detail:

Forecast (temperature, feels-like temperature, precipitation, rain probability, wind and gusts, cloud cover, air pressure, humidity, dew point, visibility, sunshine, UV index, thunderstorm potential, snow and freezing level, radiation, soil temperature and soil moisture, upper-air data): Open-Meteo (open-meteo.com), licensed under CC BY 4.0. Open-Meteo combines the ICON models of the German Weather Service, IFS of the European Centre for Medium-Range Weather Forecasts (ECMWF), GFS of the US agency NOAA, GEM of Environment Canada, ARPEGE and AROME of Météo-France, and the models of the UK Met Office (UKMO) and the Japan Meteorological Agency (JMA).
Precipitation in 15-minute steps and lightning potential: ICON-D2 model of the German Weather Service, obtained via Open-Meteo.
Model comparison and ensemble forecasts (uncertainty band): Open-Meteo.
Air quality (particulate matter, nitrogen dioxide, ozone, sulphur dioxide, carbon monoxide, ammonia, dust) and pollen forecast: Open-Meteo Air Quality API based on the Copernicus Atmosphere Monitoring Service (CAMS).
Current readings of the weather station: Bright Sky (brightsky.dev) based on station data of the German Weather Service (DWD).
Official weather warnings and the pollen hazard index: German Weather Service (dwd.de, open data).
Written weather report: generated automatically with OpenAI (model GPT-5.6) from exactly these data. The text is machine-generated and not editorially reviewed.
Interactive weather maps: Windy (windy.com), only loaded after explicit consent.
Sun and moon times: calculated astronomically. Photos: Adobe Stock and our own pictures, the credit is shown next to each image.

Weather data are forecasts and can change at short notice. In hazardous situations, only the official guidance of the German Weather Service is authoritative. Liability for decisions made on the basis of the data shown is excluded.

And apart from that

f2weather is a labour of love from Linden. We actually build websites for other people, but at some point we wanted to know for ourselves whether the evening at the Maschsee would stay dry. So we collected all the weather data there is for Hannover, talked an AI into writing an honest report from it, and rebuilt the town hall in 3D on the side. If it rains anyway: that was the weather, not us. Praise, bugs and wishes are welcome at [email protected].

Legal notice