iOS: Don't be fooled by its minimal, colour-coded user interface. Haze is a gesture-based weather app that contains a wealth of information, including current conditions and hourly forecasts.
The video above will give you an idea of what Haze looks like, but what you don't really see in the video is how easy it is to get to some of the app's features. Fire it up and the icons at the bottom of the screen let you toggle between current conditions, hours remaining until sunset or sunrise, and chance of precipitation. The colour of the background even shows you the trend for each screen, whether it's getting brighter or darker, warmer or cooler outside as the day progresses, and so on.
Swipe down from the top of the screen to see the weekly forecast for any of those three screens, and keep swiping to access the app's settings. Tap the bubble in the centre of the screen to expand it out to more useful information. For example, on the current conditions display, tapping the current temperature will show you the high and low for the day, wind chill or heat index, and wind speed and direction.
Haze isn't an app for meteorologists, but it does give you an attractive, interactive way to get just enough information about the weather. It's available now in the iTunes App Store for $0.99 (the developers say it will eventually bump up to $2.99). Hit the link below for a mockup video of the app in action on the developers' website.