Astrospheric!

Astrospheric is weather forecasting for astronomers, astrophotographers, and most of all explorers. Astrospheric was born out of a need to find great locations and to build accurate forecasts for stargazers and professional astronomers alike. FeaturesForecast 48 hour, hour-by-hour forecast Updated every 12 hours Infrared satellite view updated every 30 minutes Sky data: cloud, sky transparency, and seeing Ground data: wind, temperature, and humidity Precise rise and set times for both the sun and moonMap Cloud, transparency, and seeing map layers for most of North America Easily scrub through the 48 hour forecast with each layer Worldwide light pollution dataMoon Precise altitude and illumination information List of upcoming moon phases with datesFavorites Easily save favorite locations for easy access Favorites roam between your devices and browser (www.astrospheric.com)Site Mode Information necessary to quickly set up your GOTO tracking mount Available even if you dont have a network connection