How to Use the Hong Kong Weather Tool
This tool combines open data from the Hong Kong Observatory and the Environmental Protection Department to show: Observatory station temperature, humidity, rainfall, UV index, Air Quality Health Index (AQHI), and the 9-day weather forecast.
AQHI levels: 1-3 Low, 4-6 Moderate, 7-10 High, 10+ Severe. During high risk, reduce strenuous outdoor activities; sensitive individuals should take extra care.
Data is for reference only. Always follow the latest information from the Observatory.
FAQ
Where does the live Hong Kong weather data come from?
From the Hong Kong Observatory open data API, updated every 10 minutes.
What is the AQHI Air Quality Health Index?
Published by the EPD, it rates air quality's health impact from 1 to 10+.
Is the 9-day forecast accurate?
Short-term accuracy is higher; later days are adjusted as weather systems evolve.