I've mainly used YR:s API, it's no fuss, no registration and the data is good enough for me in a neighbouring country. It's a perk that they have some neat widget endpoints that consume a location and generate an image.
Nice to see how much you've developed Sunsethue over the last two years! I remember I built myself some custom alert logic back with your API even before the public launch :)
A year and a half or something later.. I recently started a project of my own trying to bring all "weather dependent" photo opportunities together in one place, if you wouldn't mind I would be happy to experiment with bringing Sunsethue data to https://photoweather.app - your prediction model is certainly a lot more sophisticated than mine and it would be very cool to offer that
Wow, looks like a very cool project! Feel free to experiment with the Sunsethue API! Send me an email if you'd need a higher quota to play around with.
For the ones who might be interested, Yr.no uses the ECMWF (European weather model) as their main data source. This model scores the best on benchmarks of the global weather models (available for the whole world), but AI models are catching up on some parameters. Still, there are local weather models available with a much higher resolution (these are regional and only have forecasts up to a couple days). Examples are ICON-D2, Arome, Harmonie for parts of Europe, and HRRR for the US. I'm not sure which apps use these models though.