PM2.5 Open Data - Free Science API (No Key Required)

TL;DR

PM2.5 environmental monitoring data This is a completely free API with no authentication needed — perfect for developers of all skill levels.

Quick start: https://pm25.lass-net.org/API-1.0.0/project/airbox/latest/

No API key needed — just make a request!

How to Use This API

1. Make a Request

This API requires no authentication. Simply call the endpoint.

https://pm25.lass-net.org/API-1.0.0/project/airbox/latest/

2. JavaScript Example

// Fetch data from this API
fetch('https://pm25.lass-net.org/API-1.0.0/project/airbox/latest/')
  .then(response => response.json())
  .then(data => {
    console.log(data);
  })
  .catch(error => {
    console.error('Error:', error);
  });

3. Python Example

import requests

response = requests.get('https://pm25.lass-net.org/API-1.0.0/project/airbox/latest/')
data = response.json()
print(data)

Live Example

Here's what you get when you call this API:

The URL to call: https://pm25.lass-net.org/API-1.0.0/project/airbox/latest/

The actual response you get:

// Live response placeholder - make a request to see the actual data

Try This URL Now

Important Notes

Environmental open data

Frequently Asked Questions

Do I need an API key?

No! This API is completely free to use with no authentication required.

Is there a rate limit?

Most free APIs have generous limits. Check the documentation for specifics.

Can I use this in a commercial project?

Yes, these APIs are free for both personal and commercial use. Check the documentation for any specific restrictions.

How do I use this in JavaScript?

fetch('https://pm25.lass-net.org/API-1.0.0/project/airbox/latest/')
  .then(res => res.json())
  .then(data => console.log(data));

How do I use this in Python?

import requests
response = requests.get('https://pm25.lass-net.org/API-1.0.0/project/airbox/latest/')
data = response.json()

What will the response look like?

Click "Try This URL Now" above to see the actual JSON response this API returns.

API Details

API URL: https://pm25.lass-net.org/API-1.0.0/project/airbox/latest
Documentation: https://pm25.lass-net.org/
Category: Science
Authentication: Not Required
Geographic Coverage: global

What You Can Build

Educational and learning apps
Space and astronomy tools
Scientific research assistants
STEM project resources