Poncho Weather App
Poncho is a dead simple mobile web app for viewing current and next-day weather conditions. It works on Android and iOS, although it's tailored for non-tablet smartphone devices like Android phones, iPhone and iPod Touch. It's a mobile web app instead of a native app, so it may work on even more platforms, but I haven't tested it on anything else. If you go to app.getponcho.com on your device's browser, you can bookmark and/or add the app to your homescreen and run it virtually just like a native app.
Check out the full blog post on my website
Note: Poncho's weather icons are the awesome Mobydock icons by Wojciech Grzanka