World Air Quality Index (WAQI)

aid: waqi
name: World Air Quality Index (WAQI)
description: 'The World Air Quality Index (WAQI) REST API provides real-time air quality data, AQI readings, pollutant measurements,
  and station data for more than 12,000 monitoring stations worldwide. The API delivers city-level and station-level air quality
  index values for pollutants including PM2.5, PM10, NO2, CO, SO2, and Ozone, along with geo-location queries, weather conditions,
  and 3-8 day forecast data. Access is free for non-commercial use and requires a token obtained from the Air Quality Open
  Data Platform.

  '
type: Index
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
url: https://raw.githubusercontent.com/api-evangelist/waqi/refs/heads/main/apis.yml
created: '2026-06-13'
modified: '2026-06-13'
specificationVersion: '0.19'
tags:
- Air Quality
- AQI
- Environment
- Pollution
- Real-Time Data
- Weather
- IoT
- Open Data
apis:
- aid: waqi:waqi-json-api
  name: WAQI JSON API
  description: 'The primary programmatic interface for real-time air quality data. Provides access to more than 12,000 station-level
    and 1,000 city-level data points with geo-location queries and individual AQI readings for all major pollutants. Supports
    city feed, geo-localized feed, search, and forecast endpoints. Authentication via API token obtained from the Air Quality
    Open Data Platform.

    '
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://aqicn.org/api/
  baseURL: https://api.waqi.info
  tags:
  - Air Quality
  - AQI
  - JSON API
  - Environment
  - Pollution
  - Real-Time
  properties:
  - type: Documentation
    url: https://aqicn.org/json-api/doc/
  - type: Authentication
    url: https://aqicn.org/data-platform/token/
  - type: OpenAPI
    url: openapi/waqi-openapi.json
common:
- type: Website
  url: https://waqi.info/
- type: Website
  url: https://aqicn.org/
- type: Documentation
  url: https://aqicn.org/json-api/doc/
- type: GitHubOrg
  url: https://github.com/waqi-dev-community
- type: Pricing
  url: https://aqicn.org/api/
- type: Plans
  url: plans/waqi-plans-pricing.yml
- type: RateLimits
  url: rate-limits/waqi-rate-limits.yml
- type: FinOps
  url: finops/waqi-finops.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com