Weather HD is one of those applications that you want on your iPhone, iPad or touch purely for the high-def eye candy, and it's too bad you can't use this app in place of your lock or home screen. The forecasts come from weatherunderground.com, and the app dooesn't do much more than tell you current and forecast weather--no fancy maps, satellite or radar views--but the sky condition animations that accompany the reports are downright cool.