Purple Air

API

Real-time air quality monitoring API with global sensor network data

Overview

The Purple Air API delivers real-time and historical air quality metrics from a global network of low-cost sensors. Key endpoints include retrieving sensor-specific data (PM2.5, PM10, temperature, humidity) by ID, fetching nearby sensors via geolocation (latitude/longitude + radius), and accessing aggregated regional trends. Responses are in JSON format. Use cases include building air quality dashboards, integrating insights into weather apps, supporting environmental research, and powering smart home systems that adjust based on local air quality levels.

Example Integration (JavaScript)

script.js JS


fetch('https://www2.purpleair.com/')
  .then(res => res.json())
  .then(data => console.log(data))
  .catch(err => console.error(err));

Key Features

RESTful API
JSON response format
Real-time sensor data
Global coverage
Geolocation filtering
Historical data access

Frequently Asked Questions

? Is Purple Air API free to use?

Yes, for personal non-commercial use. Commercial or high-volume applications require a paid license.

? Does it require an API Key?

Basic endpoints may not need an API key, but advanced features like historical data or commercial access require an API key from Purple Air.

? What is the response format?

All API responses are in JSON format, including metrics like PM2.5, PM10, temperature, humidity, and sensor location details.

Top Alternatives

AirNow API Search Google

OpenAQ API Search Google

World Air Quality Index API Search Google

Tool Info

Pricing Freemium

Category Science & Math

Platform Public API

Pros

⊕ Extensive global sensor network
⊕ Detailed air quality metrics
⊕ Supports real-time and historical data
⊕ Easy to integrate for non-commercial use

Cons

⊖ Rate limits apply to free usage
⊖ Commercial use requires licensing
⊖ Sensor accuracy varies vs regulatory monitors
⊖ Advanced features need API key