Solano County, CA Fire Regulations: Outdoor Burning (2026)

Solano County is split between two air districts. The Yolo-Solano Air Quality Management District (YSAQMD) regulates burning in the northeastern portion of the county (including Vacaville, Dixon, and Rio Vista), while the Bay Area Air Quality Management District covers the western and southern areas. Under YSAQMD rules, rural yard burning is permitted only on District-approved burn days and only when authorized by the resident's local fire district; residents must call the burn line (530-757-3660) to confirm. Only dry vegetative material from the property may be burned - weeds, prunings, shrubbery, and tree trimmings. It is illegal to burn garbage, building materials, pallets, furniture, plastic, treated wood, tires, or any non-organic material (a statewide ban on burning household garbage applies). Fires may not start before 9 a.m. and may not smolder or burn past late afternoon (about 5 p.m.). Burn piles cannot exceed 4 feet high by 6 feet in diameter, must be at least 50 feet from neighboring property and structures, and 15 feet from combustible materials. Agricultural burning requires a separate District ag-burn permit and District authorization before ignition each day. Open burning is prohibited entirely when atmospheric or local conditions make fires hazardous (California Fire Code 307.1.1).