For proper flight planning, information on meteo conditions are indispensable. The Surface Pressure Forecast Charts App will give you a 7-day outlook on the possible developments of the large scale meteo conditions in the USA, with separate charts for Alaska. The maps have the purpose to merely supply you with large scale, longer term info. To assess local conditions you will have to consult other, high resolution, sources. To be able to download the charts in marginal internet connectivity co