Cooler mornings mean more homeowners are eyeing that brush pile in the backyard or thinking about firing up the wood stove for the first time this season. Before doing either in Benton County, there's a legal check you need to run first, and the rules are stricter than many longtime residents assume.
The Benton Clean Air Agency enforces federal and state Clean Air Act rules, plus its own Regulation 1, across all of Benton County — Kennewick, Richland, West Richland and Benton City. The city of Kennewick confirms it doesn't handle burning rules itself; it refers all outdoor-burning questions and complaints straight to the agency. That means city hall can't grant you an exception. The agency sets the rules, and it decides, day by day, whether burning is allowed at all.
Check the burn-day status first
The agency posts a daily decision on whether residential burning is permitted. On a sample post for Oct. 5, 2026, the agency marked it a burn day and said "You may burn today from 9:00am to 5:30pm," according to the agency's Today's Burn Decision page. That status changes daily and isn't valid for any other date, so homeowners need to check the live page before lighting anything. Don't rely on what the status said a week or even a day earlier.
Wind speed factors into the daily call, too, out of fire-safety concerns for local fire departments. We've reported on a dust-storm crash on SR 397 between Kennewick and West Richland earlier this month that showed how fast wind-driven conditions can turn dangerous in this area, which is part of why the agency builds wind into its yes/no decision each morning. (See our SR 397 dust-storm coverage.)
The urban growth area line matters
Even on an approved burn day, where you live determines whether you can legally burn yard debris. The agency's outdoor burning page states plainly: "Residential Burning for disposal is only permitted outside the Urban Growth Area and residents must first check whether it is a burn day." The Oct. 5 burn-day notice repeated that limit, specifying that burners "must be outside of the urban growth areas of Benton County to burn dry vegetation."
In practice, that rules out backyard leaf or branch burning for most residents inside Kennewick, Richland and West Richland city limits, since those areas generally sit within the urban growth boundary. Homeowners on rural parcels outside that boundary, out toward Benton City or in unincorporated county land, have more leeway, but still only on days the agency marks as approved burn days.
For in-town yard debris, curbside and drop-off options remain the legal route; see our fall yard-waste disposal guide for how collection differs across Kennewick, Pasco, Richland and West Richland.
Need a different day? There's a permit for that
Property owners outside the urban growth area who want to burn on a day that isn't a standard approved burn day can apply for a Special Burn Permit directly through the agency's website. That option exists for situations like land-clearing debris that can't wait for the right daily window, but it's limited to those outside the UGA. It doesn't open the door to in-town burning.
What you can never burn
Some materials are off-limits outdoors regardless of the daily status or your address. Garbage, plastics, rubber, asphalt, paints and petroleum products may never legally be burned outdoors under the agency's rules, as outlined by NBC Right Now. Those restrictions apply every day, burn day or not.
Wood stoves and the coming winter curtailment season
As nights get colder, more households will lean on wood stoves and fireplaces for supplemental heat. Washington's Department of Ecology notes that air-quality burn bans can be issued by Ecology, local clean air agencies or tribes, and that such a ban "limits wood stove use and outdoor burning," according to Ecology's burn-ban page. A statewide burn ban tied to a governor's emergency proclamation ran through Sept. 30, 2026 and has since expired. That ban is separate from the annual wintertime wood-stove curtailment program local agencies run during stagnant, high-pollution stretches later in the season.
Specifics on how Benton Clean Air Agency stages its winter wood-stove restrictions, and how residents get notified when one takes effect, weren't available in the sourcing for this guide. Homeowners who rely on wood heat should check bentoncleanair.org periodically once temperatures drop, since a curtailment could affect stove use on short notice during a cold, stagnant air pattern.
A note for Pasco and Franklin County
Benton Clean Air Agency's authority covers Benton County only — Kennewick, Richland, West Richland and Benton City. Pasco and the rest of Franklin County fall under separate oversight, but this guide could not confirm which agency handles burn-day decisions and wood-stove rules there. Franklin County residents should check with their county or Ecology directly rather than assume Benton County's burn-day status applies to them.
Quick checklist before you burn
- Check the agency's Today's Burn Decision page the morning you plan to burn. Status resets daily.
- Confirm your property sits outside the urban growth area. If you're inside Kennewick, Richland or West Richland city limits, outdoor disposal burning likely isn't legal regardless of the daily status.
- If you're outside the UGA but need a non-standard day, apply for a Special Burn Permit.
- Never burn garbage, plastics, rubber, asphalt, paints or petroleum products, burn day or not.
- Watch for wood-stove curtailment notices as cold, stagnant weather sets in this winter.
Frequently asked questions
Can I burn leaves in my Kennewick backyard this fall? Likely not. Residential disposal burning is only permitted outside Benton County's urban growth area, and most of Kennewick sits inside that boundary, per the Benton Clean Air Agency.
I live outside Richland's city limits in unincorporated Benton County — can I burn brush? Possibly, but only on days the agency designates as an approved burn day and only if your property is outside the urban growth area. Check the daily burn decision first.
What happens if I burn on a day the agency says no? The sourcing for this guide didn't include specific penalty amounts, but the city of Kennewick confirms the Benton Clean Air Agency, not city hall, fields complaints and enforces burning rules inside city limits.
Do these rules apply in Pasco? No. Benton Clean Air Agency's jurisdiction covers Benton County. Pasco and Franklin County residents should confirm their local rules separately rather than rely on Benton County's burn-day status.
For the latest burn-day call, the agency's site is the only authoritative source. Don't rely on a status from a prior day or on word of mouth.
