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Technical Approaches for PurpleAir Data on the AirNow Fire and Smoke Map
Citation:
Barkjohn, K., A. Clements, AND A. Holder. Technical Approaches for PurpleAir Data on the AirNow Fire and Smoke Map. Presentation to Fire and Smoke Map users, virtual, NC, January 31, 2024.
Impact/Purpose:
Interest and concern about air quality has grown in recent years especially during wildfires. Simultaneously, growth in the popularity and use of air sensors across the US has also occurred. However, with so many sources of sensor and governmental data it can be challenging for users to interpret. In this presentation we will share the methods behind incorporating the PurpleAir sensor data on the AirNow Fire and Smoke map. This presentation will be shared on EPA's air sensor toolbox to inform users.
Description:
Residents and local agencies in smoke impacted areas often use air sensors to provide more localized air quality data. In 2020, air sensor measurements were added to the AirNow Fire and Smoke map. Alongside permanent and temporary smoke monitor measurements, PurpleAir sensor measurements are shown. Before sensor data is displayed on the map, PurpleAir sensor measurements are corrected and cleaned, resulting in higher accuracy measurements and improved category estimation for the NowCast AQI. This presentations will be used to describe current PurpleAir data cleaning and correction methods on EPA's air sensor toolbox wepage.