Weather apps nowadays seem to be less and less about data and just about looking nice. I was frustrated by this so I wrote Frej (from the Norse god of fair weather). https://apps.apple.com/se/app/frej/id1566974295?l=en
You can instantly see the weather for the entire day (24h) in two circles of 12h each. A yellow arc shows when the sun is up. A blue arc when present shows rainfall, with a thicker line meaning lots of rain.
Weather data is supplied by Open-Meteo (https://open-meteo.com/) which I found out about via a Show HN.
The source code is on Github: https://github.com/boxed/frej