A King County burn ban restricts wood burning, outdoor fires, or both, and at any given time you may be under one ban, the other, or both at once. Two agencies issue them: the Puget Sound Clean Air Agency calls air quality burn bans that target indoor wood heating, and the King County Fire Marshal calls fire safety burn bans that target outdoor burning. Each system has a Stage 1 and a Stage 2, and violating either can cost you $1,000 or more plus the price of any emergency response.
Why There Are Two Different Bans
The two systems answer two different problems. Air quality bans go into effect when stagnant weather traps fine particulate pollution near the ground, so they focus on fireplaces and wood stoves. Fire safety bans go into effect when dry vegetation and low humidity raise wildfire risk, so they focus on outdoor fires. Both can be active simultaneously, and the rules do not overlap neatly.
One point catches people out: a Stage 1 fire safety ban still permits recreational campfires under strict conditions, but any air quality burn ban, Stage 1 or Stage 2, prohibits all outdoor wood and charcoal fires. If both bans are on, the stricter rule controls.
Air Quality Burn Bans
The Puget Sound Clean Air Agency monitors PM2.5 across King, Kitsap, Pierce, and Snohomish counties and issues bans under RCW 70A.15.3580.
Stage 1
A Stage 1 air quality ban is called when forecasted PM2.5 is expected to exceed 35 micrograms per cubic meter within 48 hours.1Washington State Legislature. Washington Code 70A.15.3580 During Stage 1 you cannot burn wood in a fireplace, an uncertified wood stove, or an uncertified fireplace insert. EPA-certified wood stoves and pellet stoves are still allowed.2Puget Sound Clean Air Agency. About Air Quality Burn Bans All outdoor burning is prohibited, including recreational wood and charcoal fires.
Stage 2
Stage 2 follows when a Stage 1 ban has not brought pollution down and PM2.5 remains at or above 25 micrograms per cubic meter with no improvement expected for at least 24 hours.1Washington State Legislature. Washington Code 70A.15.3580 Every wood-burning device is off-limits, EPA-certified stoves and pellet stoves included.3Puget Sound Clean Air Agency. Cleaner Burning Practices
Fire Safety Burn Bans
The King County Fire Marshal issues fire safety bans in unincorporated King County based on humidity, temperature, wind, and vegetation moisture.
Stage 1
A Stage 1 fire safety ban prohibits burning yard debris and land-clearing fires in rural areas. Recreational fires stay legal, but only if every one of these conditions is met:4King County, Washington. Fire Safety Burn Bans
- Fuel is seasoned, dry firewood only. No yard debris, no trash.
- The fire sits in a metal or concrete fire pit.
- The fire is no wider than three feet.
- Clearance is at least 10 feet from vegetation, 25 feet from any structure, and 20 feet below overhanging branches.
- An alert adult attends the fire the whole time with a shovel and a bucket of water or a connected garden hose.
- Wind speed stays under 15 miles per hour.
- If smoke bothers neighbors, the fire has to be put out.
When you are done, douse the fire with water and stir until every piece of material is cool to the touch.
Stage 2
Stage 2 eliminates every outdoor fire, including recreational and ceremonial ones. The only outdoor cooking and heating you can use are manufactured portable appliances operated per the manufacturer’s instructions: gas and charcoal grills, natural gas or propane patio heaters, and wood pellet smokers.4King County, Washington. Fire Safety Burn Bans
If Wood Is Your Only Heat Source
Both stages of the air quality ban carry a narrow exemption for households where a wood-burning device is the sole adequate source of heat. It is not self-declared. You have to apply to the Puget Sound Clean Air Agency and be approved before you burn during a ban.5Puget Sound Clean Air Agency. No Other Adequate Source of Heat Without prior approval, smoke from your chimney during a ban will not be excused after the fact.
Checking Whether a Ban Is On
Because two agencies issue the bans, you have to check two sources:
- Fire safety bans: the King County fire safety page at kingcounty.gov or your local fire district. Violations can be reported at 206-296-6675.
- Air quality bans: pscleanair.gov or 1-800-595-4341.
The Washington Department of Natural Resources posts restrictions for state-protected forestlands, and Washington State Parks publishes alerts for campgrounds. Two minutes of checking before you light anything can save a thousand dollars.
Penalties and Enforcement
Fines for an illegal fire generally start at $1,000, plus reimbursement to the fire department for any response.6Puget Sound Clean Air Agency. Outdoor Burning The Puget Sound Clean Air Agency can go up to $2,500 for air quality violations.7Tacoma-Pierce County Health Department. Burn Bans
Enforcement starts three hours after a ban is declared. After that, visible smoke from a chimney or flue is treated as presumptive evidence of an illegal fire. You can rebut it by showing the smoke came from something other than a solid fuel device, but the burden is on you. Local air authorities, health departments, fire departments, and police can all issue citations once the three-hour window has passed.8Washington State Legislature. Washington Administrative Code Chapter 173-433
Rules That Apply Even Without a Ban
Some outdoor burning is restricted year-round in King County, ban or no ban. State regulation prohibits burning yard debris in urban areas at any time. In rural unincorporated areas outside the urban growth boundary, you can burn vegetation from your own property in a pile no larger than four feet wide, four feet long, and three feet high. Land-clearing fires for development are always prohibited, and burning garbage, paper, or other trash is never allowed.4King County, Washington. Fire Safety Burn Bans Call your local fire district before you burn to confirm whether a permit is required; recreational fires are generally exempt outside of ban periods.