Its hard to give a weather app 5 stars since theres always information that some would consider missing, or there may arguable be better ways to visualize certain data.
But in terms of bugs I could point to the frequent inconsistency in temperature reporting between this app and its Widget in the Notification Center. For example, the app might report a current temperature of -11C but in the Widget view it reports both -8C (the first entry representing the current location) and -13C (representing my city in its city list). So why are all 3 numbers so different? One would expect much more consistency between the widget and the app itself.
Cryolathe about Living Earth - Clock & Weather, v3.71