[orion138]

Dark Sky used that data for hyper local forecasting…

https://news.ycombinator.com/item?id=22740466

https://www.theverge.com/2015/6/22/8822767/dark-sky-weather-...

[xgulfie]

I'm still grumpy about apple buying and shuttering darksky

[thatcat]

They stopped using it during later years.

[counters]

Not really; it was a gimmick. They used standard forecast post-processing techniques to bias correct global/regional weather models. There is virtually no evidence they actually used device data in this process.