PM25.in

API

Real-time air quality data API for China

Overview

PM25.in API provides real-time and historical air quality data across China, including key metrics like PM2.5, PM10, SO2, NO2, CO, O3 levels, and AQI indices. Endpoints support fetching data by city, monitoring station, or region. Responses are in JSON format for seamless integration. Ideal for building air quality tracking apps, public health platforms, environmental research tools, or smart city solutions to inform users about pollution levels and support data-driven air quality management decisions.

Example Integration (JavaScript)

script.js JS


fetch('http://www.pm25.in/api_doc')
  .then(res => res.json())
  .then(data => console.log(data))
  .catch(err => console.error(err));

Key Features

RESTful API
JSON response format
Real-time & historical data
City/station-level details
Comprehensive pollutant metrics

Frequently Asked Questions

? Is PM25.in free to use?

Yes, PM25.in API offers free access to its air quality data, though some advanced features may have restrictions per the official terms.

? Does it require an API Key?

Certain endpoints may require an API key, which can be obtained via the official documentation portal.

? What is the response format?

The API primarily returns data in JSON format, which is lightweight and easy to parse for developers.

Top Alternatives

AirVisual API Search Google

China NEMC Public API Search Google

Tool Info

Pricing Free

Category Environment

Platform Public API

Pros

⊕ China-wide coverage
⊕ Detailed air quality metrics
⊕ Easy integration
⊕ Free access

Cons

⊖ Limited to China only
⊖ Potential rate limits
⊖ No official SLA
⊖ Some endpoints require API key