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Hong Kong Observatory

Hong Kong weather, warnings, and climate open data

🌦 WeatherUNMONITORED
AUTH NONECORS ✓AGENT ?HTTPS ✓COMMERCIAL ?

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.

—HOW IT'S SCORED ⓘ
▶ Run liveDocs ↗
Status badge · for your READMEshipapis health badge: — · unmonitored
ON PROBE SCHEDULE

We probe a documented GET and expect 2xx JSON — full uptime and health score. Open provider docs ↗

Uptime historystarts after first probe

On our probe schedule. Uptime charts appear after the first check lands.

Example responsefrom provider docs — not verified by us
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"
      }
    ]
  }
}
Call itcurl · fetch · python
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())
Endpoints · 3On scheduleFULL DOCS ↗
On schedule — GET /weather.php?dataType=rhrread&lang=en awaits first probe
GET/weather.php?dataType=rhrread&lang=enPROBED

Hong Kong weather, warnings, and climate open data

GET/weather.php?limit=5

Weather Php — documented GET route.

GET/weather.php?page=1

Weather Php — documented GET route.

Machine-readable spec

We probe a documented GET and expect 2xx JSON — full uptime and health score. Export includes every documented route below.

Response-shape history

Not tracked yet. Shape-change history starts once this API joins our probe schedule.

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?

Hong Kong Observatory is catalogued but not yet on our probe schedule, so we don't publish a live status for it. Check the provider's own status page or docs for its current state.