Earlier quoted context omitted.
Their new weather forecasting service is also intriguing. They will soon have millions of thermometer-equipped Apple Watches in the world (IIRC the Series 8 and AWU will have these), allowing them to create an incredibly detailed mapping of temperatures around the world (or at least places where people can afford expensive watches...).
I'm not sure what happened but Dark Sky went from awesome to awful in recent months after the Apple acquisition. Is it just me? Going from "no rain all day" to actively raining with a huge storm 2 hours later. The app does update with this info, but very close to the actual storm.
* Climate change is causing problems with forecasting models
* Forecasting models changed, which has introduce unexpected edge cases