A weather forecasting and navigation device for vehicles is provided that generates local or specific weather forecast information while generating its own power. In one example, the device may include an integrated wind turbine that is turned by the wind flow created by the vehicle's motion to generate power for the device. In alternative implementations, instead of a wind turbine to generate power, different methods of power generation may be used. The device may also include a built-in alarm system that senses when the vehicle is moved and triggers an audible alarm.