During and immediately following the fires are when air quality impacts are the highest. There are steps you can take to prevent nearby burned buildings from affecting your home’s indoor air quality. Take off your shoes and wipe off your pets’ paws to prevent them from tracking ash and soot into your home. Keep doors and windows shut as much as possible. Clean parts of your home with smoke damage (see “What can I do about the air quality in my home as a result of smoke, soot, or ash?”).
Ash and soot will be absorbed into the ground over time and following rainfall. Sonoma County has received a good amount of rainfall since the October fires. At this point, it is unlikely that nearby burned buildings can affect your home’s indoor air quality.