In Sonoma County, smoke can roll in quickly when fires are burning nearby or farther away. For many Petaluma residents, the exposure pattern isn’t limited to “being outside.” It often follows routines:
- Morning and evening commutes along routes where visibility drops and air quality deteriorates.
- Outdoor work (construction, landscaping, utilities, warehouses with open loading areas).
- Time spent in vehicles where air recirculation may not be properly used or filters may be ineffective.
- Indoor exposure at offices, schools, and care facilities where HVAC systems were not tuned for smoke events or filtration wasn’t upgraded.
When symptoms show up during those windows—then persist after the smoke clears—that timeline can be critical to connecting your health effects to the event.


