1. The Weather Channel
The free Weather Channel app uses the sleek WP7 interface to its advantage. Even with its larger text, The Weather Channel app still packs in frequently-updated information on different screens that can be swiped through smoothly. With scenic photos as a backdrop, the app provides current temperatures, forecasts and more. Swipe to another screen and there's a five-day forecast with graphics and more details. Another screen lands on a radar map, and a final screen provides video forecasts and traffic cams.