AssholeDesign

This is actually a really great feature. Dark Sky first started using crowdsourced barometric pressure readings to provide rain warnings. It provided a 10-minute warning for rain that was incredibly accurate. Living in NY, I got a 10-minute notification because someone 10-minutes southwest of me just got rained on.

Apple bought Dark Sky a couple years ago, and integrated the feature into the Weather app. The data is anonymized (hashed, encrypted, and relayed), so now it’s completely private.

It uses more power by leaving location services and barometric readings on persistently, but you can turn it on and off when you need it. It’s great for cyclists, runners, and hikers.