Per county guidance, we consult Fire.AireNow.gov which aggregates data from both Purpleaire.com and Airnow.gov. It's important to remember that numbers do not always reflect real-time information precisely, and that air quality can be highly localized and subject to rapid change. As such, we consult this tool in conjunction with local observations.
This document was developed collaboratively with Sonoma County's Department of Health and both Sonoma County air management districts and the county's Department of Health. It provides guidance for modifying activity in schools due to air quality.