PurpleAir makes sensors that empower communities who collect hyper-local, real-time, air quality data and share it with the public. PurpleAir provides affordable air quality sensors and real-time data, empowering a wide range of people to make big and small steps towards advancing air quality knowledge. While the applications are diverse, some of the most common uses include creating detailed air quality maps, monitoring pollution levels across communities, and supporting scientific research. By making air quality data accessible to individuals, organizations, and researchers alike, PurpleAir plays a vital role in improving environmental awareness and driving informed decision-making.