I've been using this one since underground stopped being useful.
https://play.google.com/store/apps/details?id=com.samruston....
Sadly at some point they weren't able to pay for the dark sky API anymore and since then the quality of forecasts is a bit less convincing. I'm still rather shocked by the low reviews though, for me it works well and I love that you can add a dozen cities and see the forecast.