A method and a system for viewing weather hazards which is on-board an aircraft. The system (300) includes communication means (330) for receiving weather information relating to a given region, a processor (310) for determining, at each point of the region, the future instant at which the vehicle would reach this point, an expert system (340) for estimating, at each point of the region, from the weather information and the future instant, the weather hazard at that point, and a graphic interface (360) for displaying, at each point of the region, the weather hazards thus estimated by the expert system.