A Snohomish County burn ban can come from any of three agencies, and each one has its own trigger and its own rules about what you can still light. The Puget Sound Clean Air Agency restricts indoor wood-burning devices when fine particulate pollution climbs. The Snohomish County Fire Marshal bans outdoor burning when wildfire risk spikes. The Washington State Department of Natural Resources shuts down burning on state-protected forest lands during extreme conditions. Because these bans overlap without mirroring each other, you can comply with one and still break another.
How to Check Whether a Burn Ban Is Active
Before lighting anything, check all three agencies. One source is not enough.
- Puget Sound Clean Air Agency: pscleanair.gov posts current air quality burn ban status. A recorded line is available at 800-595-4341.
- Snohomish County Fire Marshal: the county’s outdoor burning page at snohomishcountywa.gov/1144 lists fire safety burn ban updates.1Snohomish County. Outdoor Burning Information
- Department of Natural Resources: burnportal.dnr.wa.gov shows restrictions on DNR-protected lands and handles permit applications.2Department of Natural Resources. Burn Permits
The EPA’s AirNow system at airnow.gov shows real-time particulate readings for your location, which helps you see an air quality ban coming before the agency formally declares one.3AirNow. AQI Basics DNR restrictions matter even off public land, because they cover state, county, city, and private property under DNR fire protection.1Snohomish County. Outdoor Burning Information
Air Quality Burn Bans: Stage 1 and Stage 2
Air quality bans respond to concentrations of PM-2.5, the fine particulate in wood smoke. A Stage 1 ban is called when the local air authority predicts a 24-hour PM-2.5 average will reach or exceed 35 micrograms per cubic meter within 48 hours. Snohomish County has a tighter trigger because parts of the county are at risk of missing federal air quality standards: the agency can call a Stage 1 ban at 30 micrograms per cubic meter with a 72-hour forecast window.4Washington State Legislature. Washington Administrative Code Chapter 173-433 – Solid Fuel Burning Devices
A Stage 2 ban follows when a Stage 1 hasn’t lowered pollution and the 24-hour PM-2.5 average is at or above 25 micrograms per cubic meter with no improvement expected. The agency can also skip to Stage 2 when pollution is climbing quickly and weather alone won’t clear the air.4Washington State Legislature. Washington Administrative Code Chapter 173-433 – Solid Fuel Burning Devices
What You Can Still Use
During a Stage 1 ban, you cannot use an uncertified wood stove, a standard fireplace, or an uncertified fireplace insert. EPA-certified wood stoves and pellet stoves are still allowed.5Puget Sound Clean Air Agency. About Air Quality Burn Bans Many older Snohomish County homes have stoves that predate EPA certification and look perfectly functional but are not legal to run during Stage 1.
During a Stage 2 ban, every solid-fuel device is off limits. Certified wood stoves and pellet stoves are banned alongside uncertified ones.6Puget Sound Clean Air Agency. Cleaner Burning Practices If it burns solid fuel, don’t use it.
The Heat Exemption
There is one exception at both stages: households where a wood-burning device is genuinely the only source of heat. You must apply through the Puget Sound Clean Air Agency and receive approval before a ban begins. The exemption is not automatic, and it cannot be claimed after the fact.7Puget Sound Clean Air Agency. No Other Adequate Source of Heat If you rely on wood heat, apply during the off-season so paperwork is in place before winter.
Fire Safety Burn Bans
Fire safety bans also use a stage system, but the triggers are wildfire risk factors like vegetation dryness, humidity, and wind. They run independently of air quality bans.
A Stage 1 fire safety ban prohibits outdoor residential burning such as yard debris fires. Recreational fires, cooking fires, and charcoal and propane grills are still allowed. A Stage 2 fire safety ban keeps those same permissions for grills and recreational fires while continuing the ban on residential burning.8Snohomish County. Snohomish County Extends Outdoor Burning Ban
A Red Flag Warning from the National Weather Service changes everything. When one is in effect for the area, all outdoor burning is prohibited, recreational fires included, with no exceptions until the warning is lifted.8Snohomish County. Snohomish County Extends Outdoor Burning Ban
Rules for Recreational Fires
When recreational fires are allowed, they still have to meet fixed limits:
- No larger than three feet in diameter and two feet in height
- At least 25 feet from any structure or combustible material, inside an approved fire pit or manufactured fire appliance
- Fueled only by dry, clean firewood or charcoal (no construction scraps, trash, or green wood)
- Attended at all times, with a water source immediately available
These limits apply whether or not a ban is in effect.9South County Fire. Burn Bans and Regulations
Materials That Are Never Legal to Burn
Ban or no ban, Washington law permanently prohibits burning garbage, construction debris, treated or painted lumber, plastics, rubber, petroleum products, metal, asphalt, and dead animals on any property, year-round.10Washington State Department of Ecology. Outdoor and Residential Burning The list is broader than most people expect. Cardboard boxes, junk mail, and building scraps all fall inside it.
Permits and Where You Live
Even with no ban in effect, most outdoor fires in Snohomish County need a permit. The right permit depends on your location.
Urban Growth Areas and City Limits
Inside an urban growth area, yard debris burning and land-clearing burning are permanently prohibited, regardless of ban status. Only recreational fires using charcoal, dried firewood, or manufactured fire logs are allowed, and they must meet the size and setback rules above. The same restrictions apply inside city limits.
Outside Urban Growth Areas
Residents in unincorporated areas outside urban growth boundaries can burn natural vegetation from yard maintenance, but only with a permit from their local fire district and only when no burn ban is active. Typical conditions require the fire to contain only natural vegetation, stay within a set pile size, burn on bare soil or green grass, and be fully extinguished before sunset. A valid permit does not override an active ban; you still need to confirm status before lighting.
DNR-Protected Lands
Anyone burning on lands under DNR protection needs a valid written burn permit signed by both DNR and the person doing the burning.11Washington State Legislature. Revised Code of Washington 76.04.205 Small piles meeting DNR’s rule-burn requirements can proceed without a permit; anything larger requires an application through DNR’s online burn portal, with fees based on tonnage.2Department of Natural Resources. Burn Permits DNR does not permit burning of land-clearing debris at all.
Penalties for Illegal Burning
Fines for illegal fires in the Puget Sound region typically start at $1,000, plus reimbursement to the fire department for its response.12Puget Sound Clean Air Agency. Outdoor Burning The reimbursement piece surprises people. If your illegal burn triggers a full engine response, the bill for crew time and equipment lands on top of the base fine.
Under the Washington Clean Air Act, civil penalties can reach $10,000 per day per violation, with each day of continued noncompliance counted as a separate offense.13Washington State Legislature. Revised Code of Washington 70A.15.5010 – Agricultural Burning – Fees and Penalties That statutory maximum gives the agency wide discretion. A first-time violation with no damage will sit at the low end; refusing to extinguish a fire or causing damage to a neighbor’s property pushes penalties up quickly.
If a prohibited fire escapes and causes property damage or requires emergency suppression, the responsible party is also liable for the full suppression costs on top of any civil penalties. In a county ringed by forest, those costs can run high.