Independent air-quality information, tools and research resources with an emphasis on source transparency and responsible interpretation.
Last reviewed: October 2026
Our purpose
AirQualityIndex.org is an independent air-quality information platform designed to make AQI, pollutant information, location-based air-quality data and supporting research easier to explore. We aim to present source attribution, timestamps and methodology clearly so readers can understand what a value represents.
How we work
The site combines educational resources with information supplied or derived from third-party monitoring and modelling services. For detailed information about providers, retrieval delays, real-time data limitations and methodology, see Data & Methodology and our Disclaimer.
Independence and funding
AirQualityIndex.org may be supported by advertising, affiliate/referral relationships and sponsorships. Commercial relationships do not alter the source attribution of air-quality data. Our consolidated disclosure is included in the Disclaimer.