MeteoEarth is a US$4.99 weather app with enough visual treats to makes your iPad's screen look like something from a TV weathercast. In fact, much of the display tech in the app was adopted from professional weather applications.
The app offers high-resolution animated graphics of precipitation, temperature, wind, cloud cover and isobars that show barometric pressure.
You can add each item as a layer on the screen, and set up your favorite cities. In addition, the map shows what parts of the globe are in daytime or nighttime, moon phases and country borders. You can also create custom set ups and save them for later viewing. Zooming is done with common gestures.