Hong Kong Observatory
Hong Kong weather, warnings, and climate open data
The Hong Kong Observatory's open-data API returns current weather, rainfall by district, forecasts, and warnings as JSON. A single keyless GET with a dataType parameter pulls the current-conditions report. Data is bilingual (English and Chinese) via a lang switch.
GET https://data.weather.gov.hk/weatherAPI/opendata/weather.php?dataType=rhrread&lang=en
{
"rainfall": {
"data": [
{
"unit": "mm",
"place": "Central & Western District",
"max": 0,
"main": "FALSE"
}
]
}
}curl "https://data.weather.gov.hk/weatherAPI/opendata/weather.php?dataType=rhrread&lang=en"const res = await fetch("https://data.weather.gov.hk/weatherAPI/opendata/weather.php?dataType=rhrread&lang=en");
const data = await res.json();
console.log(data);import requests
res = requests.get("https://data.weather.gov.hk/weatherAPI/opendata/weather.php?dataType=rhrread&lang=en")
print(res.json())/weather.php?dataType=rhrread&lang=enPROBEDHong Kong weather, warnings, and climate open data
/weather.php?limit=5Weather Php — documented GET route.
/weather.php?page=1Weather Php — documented GET route.
We probe a documented GET and expect 2xx JSON — full uptime and health score. Export includes every documented route below.
Stable. No schema drift observed since monitoring began — the response shape has not changed under our checks.
Hong Kong Observatory: common questions
Is Hong Kong Observatory free to use?
Yes — Hong Kong Observatory is a free weather API. Free tier: Free, no key. Whether the free tier allows commercial use is unclear — check the provider docs.
Does Hong Kong Observatory need an API key?
No — Hong Kong Observatory needs no API key or signup. You can call it straight away; rate limits still apply (Unpublished).
Can I call Hong Kong Observatory from the browser?
Yes — Hong Kong Observatory returns CORS headers over HTTPS, so front-end code can fetch it directly with no backend proxy. Use the fetch snippet on this page, or hit "Run live" to try it now.
Is Hong Kong Observatory up right now?
As of our last scheduled check, Hong Kong Observatory is healthy with 100% uptime over 90 days and a 1330 ms median response. We re-probe it every sweep — the status badge and uptime chart above always show the latest.