Weather radar prediction?
Would it be possible to add a short term (1 hour) rain forecast based on weather radar? Something similar to what MeteoRadar (https://mapy.in-pocasi.cz/) does. By the way, any idea whether they're doing their own prediction or just displaying 3rd party data?
Just googled this: https://en.wikipedia.org/wiki/Nowcasting_(meteorology)
And to answer my question, MeteoRadar gets forecast data from: http://portal.chmi.cz/files/portal/docs/meteo/rad/inca-cz/short.html
Actually, nowcasting (and what ClimaCell does - using data from wireless networks as an additional data source), could be a cool business model in case you change your mind about Windy being non-profit. There's little competition to be found.