The U.S. AQI is the EPA's index for reporting air quality. The higher the AQI value, the greater the level of air pollution and the greater the health concern.PM
2.5 is one of several air quality metrics used to compute the AQI. Other primary pollutants include PM
10, ozone, nitrogen dioxide, and sulfur dioxide.Our data is an aggregation of any and all publically available air quality monitors of all shapes and sizes from around the world, including
PurpleAir, the
EPA, and of course our very own
TELLUS AirU. We apply rigorous, periodic screening and calibrations to all measurements obtained from the cost-effective monitors to ensure the highest quality data and allow community members to make accurate, informed decisions about their air quality. Learn more about our approach by reading some of our publicly available
scholarly articles.