South Coast AQMD continues to conduct air monitoring in and around the Eaton and Palisades fire areas.

Since January 31, 2025, South Coast AQMD has released a series of weekly updates detailing air monitoring results from multiple locations in Altadena, Pasadena, and Pacific Palisades. These reports provide data on fine and coarseparticulate matter (PM2.5 and PM10, respectively), toxic metals (including lead, arsenic, and selenium), and asbestos—pollutants that may be released during post-fire cleanup.

The air monitoring, which includes fixed and continuous real-time monitors, is designed to provide timely information and transparency to residents affected by airborne contaminants. In some cases, elevated levels of certain metals, such as vanadium and selenium, were detected slightly above background levels. Still, none have posed a public health risk according to public health experts.

South Coast AQMD continues to work in collaboration with the Los Angeles County Department of Public Health to advise residents on ways to minimize exposure to dust and debris during periods of high winds. This includes staying indoors, using air purifiers, and avoiding outdoor physical activity when advisories are in effect.

Weekly updates, in both English and Spanish, are available at www.aqmd.gov/lawildfires. Residents can also view air quality trends on the agency’s wildfire monitoring dashboard and download South Coast AQMD app for real-time alerts.