API to allow apps and watchfaces to retrieve weather

[jf-uu]

Is there an existing issue for this?

• I have searched the existing issues

Proposed feature request

The Weather app receives weather updates from the mobile app, but this data isn't available for watchfaces or apps. This leads watchfaces and apps to implementing their own weather support using an API like OpenWeatherMap.

Alternatives

Implementing weather support using OpenWeatherMap.

Anything else?

Happy to open a PR for this if there is any interest.