為了方便市民隨時隨地獲得最新天氣資訊，香港天文台發展了流動應用程式「我的天文台」，提供個人化天氣服務，讓用戶得知所在地區的最新天氣資料。該程式提供一系列天文台的服務如七天天氣預報、風暴預測路徑、世界主要城市天氣預報、雷達及衛星圖像、閃電位置等。只要開啟了天氣警告通知服務，當天氣警報訊號轉變時，程式會自動把提示訊息送到用戶的智能手機。最近，程式引入了「定點降雨預報」服務，讓用戶可輕易掌握所在位置或其他選定地點未來兩小時的降雨預報。

The MyObservatory mobile app was developed by the Hong Kong Observatory to enable members of the public access to the latest weather information anytime and anywhere. The app provides personalized weather services, thereby allowing users to obtain the latest weather information specific to their locations. The app also comes along with a suit of services from the Observatory such as 7-day forecast, forecast track for tropical cyclones, world major city forecasts, imageries for radar, satellite, lightning locations, etc. By activating weather warning notification service, alert messages would be delivered to user’s smartphone automatically whenever there is any change in weather warning signals. The "Location-based Rain Forecast" service was recently introduced, through which users could easily get hold of the rainfall forecast in the coming two hours specific to their actual or selected location.