Air Quality Sources
A curated set of first-party sources for health guidance, AQI methodology, monitoring data, atmospheric modelling and development research.
Health & global guidance
WHO Air Pollution
Global health information, pollutant health effects and air-quality guidance.
Visit primary source ↗WHO Global Air Quality Guidelines
Evidence-based guideline values for PM2.5, PM10, ozone, NO2, SO2 and CO.
Visit primary source ↗WHO Ambient Air Pollution Fact Sheet
Health and policy context for ambient air pollution.
Visit primary source ↗AQI & official air-quality information
U.S. EPA – Air Quality Index
EPA information on the U.S. AQI, pollutant reporting and health communication.
Visit primary source ↗EPA / AirNow AQI Basics
Public-facing U.S. AQI categories and communication framework.
Visit primary source ↗European Air Quality Index
Official European AQI information and station/modelled layers.
Visit primary source ↗Monitoring data, open data & atmospheric modelling
WAQI / AQICN
World Air Quality Index project API and station/city air-quality feeds. Attribution to the project and originating monitoring agency is required; reuse is subject to current provider terms.
Visit primary source ↗U.S. EPA AirData
Official U.S. outdoor air-quality monitoring data, reports and download tools.
Visit primary source ↗OpenAQ
Open-access API and documentation for publicly available air-quality measurements.
Visit primary source ↗Copernicus Atmosphere Monitoring Service
Worldwide atmospheric composition forecasts and European air-quality information.
Visit primary source ↗Development & economic evidence
World Bank Pollution Management and Environmental Health
Research and development resources on pollution management, health and economic impacts.
Visit primary source ↗World Bank – Accelerating Access to Clean Air
Global assessment of clean-air policies, exposure and investment needs.
Visit primary source ↗Source-use policy
These links are provided to help readers verify information at the originating institution. Availability, licensing and terms can change. Data users should review the current terms of the relevant provider before downloading, redistributing, storing, publishing or commercialising data.