Hong Kong Observatory

API

Free weather, earthquake, and climate data API for Hong Kong

Overview

The Hong Kong Observatory Open Data API provides RESTful endpoints for real-time weather (temperature, humidity, rainfall, wind), earthquake alerts (magnitude, location, depth), and historical climate records (monthly averages, extreme events). Responses are in JSON format. Use cases include building HK-focused weather apps, integrating earthquake warnings into local services, analyzing climate trends for research, or adding HK weather updates to tourism platforms.

Example Integration (JavaScript)

script.js JS


fetch('https://www.hko.gov.hk/en/abouthko/opendata_intro.htm')
  .then(res => res.json())
  .then(data => console.log(data))
  .catch(err => console.error(err));

Key Features

RESTful
JSON support
No API key required
Real-time weather data
Earthquake alerts
Historical climate records

Frequently Asked Questions

? Is Hong Kong Observatory API free to use?

Yes, it is completely free for public use without subscription fees.

? Does it require an API Key?

No, most endpoints do not require an API key, though usage limits may apply to ensure service stability.

? What is the response format?

The majority of responses are in JSON format, which is easy to parse for developers.

Top Alternatives

OpenWeatherMap Search Google

Tool Info

Pricing Free

Category Weather

Platform Public API

Pros

⊕ Official Hong Kong government data source
⊕ Comprehensive HK-specific data
⊕ Easy integration
⊕ Free access

Cons

⊖ Limited to Hong Kong region
⊖ Potential rate limits for high usage
⊖ Large response sizes for historical climate data