The app provides current weather including temperature, relative humidity, rainfall, wind direction and speed, as well as weather photograph collected from nearby weather stations at user's location, specified location, or selected weather stations.
Depending on factors such as network usage and quality of user's mobile phone connection, it may take 5 to 20 minutes or even longer for the app to receive the notification after it is issued by the Hong Kong Observatory.
The location displayed in the function of "My Weather Report" is provided by third party provider.
This location will be displayed on the main page and in "My Weather Report".
The meteorological data displayed on "My Location" or the station you added is provided by meteorological stations nearby, and is not necessarily from a station in the same region.
Users who wish to save battery usage of the app may enable the notification function in rainy days and before outdoor activities, and disable the function in sunny days and after finishing the outdoor activities.
The notification service of weather warnings, Special Weather Tips, and Location-based Rain Forecast is provided through the Apple Push Notification service (APNs).
Other data will be updated in 10-minute interval and the update time will be displayed at the bottom of the front page.
In case meteorological data is not available from nearby stations, data from other meteorological stations at headquarter of the Observatory, King's Park, and Star Ferry will be used instead.
In the "My Location Settings", users can opt for using the automatic location service provided by the smartphone, or designating "My Location" on the map themselves.
Meanwhile, selecting options of less frequent update and lower position accuracy in the advanced settings of the notification function may also save battery usage.
If your location cannot be found, "My Location" will show the last location which was successfully found or "Hong Kong Observatory".
Users should not rely on the mobile app as the only means for reception of important weather information.
Use of Location-based Rain Forecast notification will increase the battery usage and data download slightly.