It's a clock app. It's a weather app. Climate Clock is actually both...at once...offering users a colorful gradient and easy-to-decipher iconographic interface merging an analog clock face with widget-style weather icons to tell you whether an hour from now you'll need to bring out the scarf or apply some sunblock.
If Climate Clock's interface looks strangely familiar, there's actually a reasoning behind the gradient presentation:
...the backround gradients. Clear and then SoLAR are the originators of this style. It’s a good solution when it comes to representing the current weather conditions and temperature. Some other weather apps display actual photos, but unless they’re showing live photos (which they’re not), you end up in a sort of uncanny valley, where the photos are meant to concretely represent the current weather, but they’re actually just approximations. Gradients are a great way to capture the feeling of the sky and temperature without being too literal.
Climate Clock is currently only available for iOS for $0.99 (Android users have the less refined, but similarly themed Weather Clock Complete 1.5 available from a completely different developer).
(Image/Video: Climate Clock; Weather Clock)