The warnings of Dark Sky changes were over a few years and final shutdown warning much of last year. I wanted to be upset but knew better.
It's still all plus more in their new weather app but I'm not a fan of drilling into the screens. The new Weather is better for longer term forecasts but still has the hyperlocal stuff. They disclose the data sources and there are tutorials.
Still, Dark Sky was best for short-term knowledge. I think the $ few I spent were worth the entertainment and utility. Rant over LOL.
Yes to Ventusky being fantastic but it is a different animal. Foreca is often most accurate in a lot of places. The European apps have or can have an edge because the main European weather modeling has gotten ahead of the US.
Real Earth is interesting for weather nerds and they have an app but you have to understand what it really is - 200+ data layers you can put on a Google Maps basemap.
https://realearth.ssec.wisc.edu
Something funny about the weather, water and climate data stuff is our ski club has active and retired scientists from the university who did or do work in that Real Earth project, and the main USGS water office and data center many people use is near so I am often in really fun interesting conversations on this stuff. Especially when they chat with a friend who does data visualization for sewage matters! I did a 160 mile bike ride with 3 of them LOL for constant fun nerdy stuff at my ears.
The site
https://www.forecastadvisor.com is worth a visit. They rank data source and app accuracy long and short-term for where you might live.
For those who love this stuff make sure you know UC Irvine precipitation project (iRain) and, U of Nebraska's drought monitor, and OPENSNOW for skiers and snowboarders.