freeapis

Purple Air

Real Time Air Quality Monitoring

Authentication
No auth
HTTPS
Yes
CORS
Unknown
Data source
public-apis + marcelscruz
Documentation / URL
https://www2.purpleair.com/

Overview

Purple Air provides air quality data — key-based in practice (a missing key returns 403, verified).

Quick Start

Sensors (replace YOUR_KEY):

curl "https://api.purpleair.com/v1/sensors?fields=name" \
  -H "X-API-Key: YOUR_KEY"
{ "api_version": "V1.2.2", "error": "ApiKeyMissingError" }

Authentication

  • Register at purpleair.com → API key.
  • Send it as the X-API-Key header (missing → 403, verified).

Rate Limits & Notes

  • Free tier with limits (check the docs).
  • Air quality sensors.

FAQ

Is Purple Air free? Free tier with limits; more is paid.

Why 403? An API key is required (verified) — register for one.

What’s the auth style? X-API-Key header.

More in Science & Math

APIAuthHTTPSCORS
arcsecond.io

Multiple astronomy data sources

No authYesUnknown↗
arXiv

Curated research-sharing platform: physics, mathematics, quantitative finance, and economics

No authunknownUnknown↗
arXiv

Curated research-sharing platform: physics, mathematics, quantitative finance, and economics

No authYesUnknown↗
Bootprint

Random facts and images of space

No authYesUnknown↗
CodeCogs

Render LaTeX equations in PNG, GIF, SVG, EMF, PDF, JSON, or download formats with styling options

No authYesUnknown↗