Weathermap+
This weather app is as good as I have seen for North America, but there are a few in Australia that are amazing. As an amateur astronomer, I like to look for clear skies, and with the sun at solar max, we have been treated to Aurora Borealis at comparatively low latitudes this year. I would like to see a dedicated layer that indicates forecasts for cloud cover. This app does have it only in the all "layers" format. But it is amazing the data collected and interwoven for a pretty comprehensive forecast! It is my go to weather app.
Skysall about
WeatherMap+, v1.6