On a whim, I wanted to know if #meteoswiss provides an API for getting the data of swiss weather stations (because I couldn't find a #homeassistant integration for it). Turns out: they have one since last month and it's part of the wider swiss #opengovernmentdata ecosystem. Nice!
https://www.meteoswiss.admin.ch/services-and-publications/service/open-data.html
(and they also publish other interesting data such as pollen concentration)