The weather app I used sent location data from pretty much everyone who didn't manually go through the effort to opt out to some shady American data broker that got hacked. Most people using the app gave it location permissions because of its ability to warn for rain coming to your precise location with decent accuracy.

Nobody wanted to share their location with these data brokers, but thanks to underfunded privacy watchdogs, you have no idea what happens to any app that you give any kind of permission.