Outdoor burning rules in Napa County, CA — also called the burn ban, open burning, or fire restriction ordinance — set when you can burn yard waste, debris, or run a recreational fire.
All outdoor burning in unincorporated Napa County is regulated by the Bay Area Air Quality Management District under BAAQMD Regulation 5 (Open Burning), with concurrent CAL FIRE Sonoma-Lake-Napa Unit notification required. Wood burning is banned on Spare the Air days, and agricultural burning is only allowed on BAAQMD-designated burn days within permissive seasons.
Outdoor burning in unincorporated Napa County is governed by BAAQMD Regulation 5 (Open Burning) and Regulation 6, Rule 3 (Wood-Burning Devices), enforced jointly with the Napa County Fire Marshal under Napa County Code Chapter 15.32. Agricultural burn permits are required from BAAQMD, with fees paid prior to ignition. Permissive seasons run November 1 through April 30 for orchard pruning and attrition burns, and October 1 through April 30 for crop replacement burns. Growers must call the CAL FIRE Sonoma-Lake-Napa Unit at 707-967-1400 (business hours) or 707-963-4112 (after hours) before lighting. Each day is designated a burn or no-burn day based on air quality forecasts. Backyard burning of leaves and yard waste is permanently prohibited under BAAQMD Regulation 5. Spare the Air alerts impose a complete ban on wood burning, indoors and outdoors. Red Flag Warnings or PSPS events trigger additional fire-marshal suspensions.
Burning on a designated no-burn day, without BAAQMD notification, or outside an established burn season is a violation of BAAQMD Regulation 5 carrying civil penalties up to $10,000 per day per violation. Failure to notify CAL FIRE prior to ignition violates state agricultural burn rules. If a permit-required burn escapes, the responsible party is liable for suppression costs under California Health and Safety Code 13009.
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See how Napa County's outdoor burning rules stack up against other locations.
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