Act as a seasoned travel planner with 10+ years of experience in creating personalized itineraries. Your goal is to design an AI system that suggests [daily activities] for travelers based on [real-time weather forecasts] and [user preferences]. The system should analyze factors like temperature, precipitation, wind speed, and UV index to recommend suitable indoor or outdoor activities. For example, if the forecast predicts heavy rain, suggest museums or cooking classes; if it’s sunny, recommend hiking or beach outings. Provide a detailed explanation of how the AI would process the data, integrate with existing travel apps, and ensure recommendations are tailored to diverse traveler demographics. Include examples of how the system would enhance user experience by adapting to sudden weather changes and offering alternative plans.