> forecasting of weather data payed by the taxpayers offered for free is forbidden That surprises me. The data itself is open (https://www.dwd.de/EN/ourservice

> forecasting of weather data payed by the taxpayers offered for free is forbidden That surprises me. The data itself is open (https://www.dwd.de/EN/ourservices/opendata/opendata.html https://www.dwd.de/EN/ourservices/opendata/opendata.html: “According to a change in the Deutscher Wetterdienst Act, which has come into effect on 25.7.17, the DWD has been given the legal mandate to make its weather and climate information available mostly free of charge”), and trivially retrieved from their server, for example from https://opendata.dwd.de/weather/text_forecasts/ https://opendata.dwd.de/weather/text_forecasts/ I don’t remember the URL, but they also have a freely available GIS server that serves weather warnings that is easily used as a layer on top of OSM data. I don’t know the details, but I think the issue is that raw data is free, but writing apps on top of it is left to the market. I don’t see any reason why there can’t be a free open source app that uses this data.