About
An extensive Bay Air Center resource for local air sensor data, spanning the nine counties covered by the Bay Area Air District. The Air Sensor Dataset (ASDS) currently contains 7 years of quality-controlled fine particulate matter (PM2.5) data from 2018 to the end of 2024 for over 5,000 outdoor PurpleAir (PA) sensors. Use the buttons above to explore how people are using the Air Sensor Dataset, get answers to common questions, and request access to the dataset.
