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  1. Public Health
  2. Environmental Health
  3. Air Quality
  4. Outdoor Air Quality
  5. Wood Smoke Pollution

Wood Smoke Pollution

wood stove emission

Modern wood heating appliances (wood stoves, boilers or furnaces) can create dense plumes of smoke for hours at a time. Whether visible or not, wood smoke contains:

  • Fine Particles (PM2.5)
  • Carbon Monoxide
  • Ozone
  • Nitrous Oxides
  • Sulfur Dioxide
  • Polycyclic Aromatic Hydrocarbons (PAHs)

Local governments may control the use of wood heating appliances through local ordinances. 


Health Risks from Wood Smoke Pollution

The chance a person will experience health effects as a result of exposure to smoke depends on the concentration of air pollutants they breathe and the duration of their exposure.

  • Breathing wood smoke is a health risk, especially for children, the elderly, people with asthma, heart disease and other respiratory ailments.
  • Exposure to fine particles in wood smoke can trigger or aggravate respiratory and cardiovascular problems.
  • When wood burners have short stacks or are located close to homes, there is a greater potential for smoke to create a health hazard for both the homeowner and neighbors.

Unfortunately, the toxic gases and fine particles in wood smoke are so small that they can penetrate into homes, even when windows and doors are closed.


Reducing Wood Smoke Pollution

If you are a homeowner with a wood heating appliance such as a wood stove or fireplace insert:

  • Use only an EPA approved wood burning appliance.
  • Only burn dry wood, never burn treated lumber, trash or recyclables.
  • Preheat your firebox with a small hot kindling fire, before loading with wood.
  • Open the damper before opening the stove, to minimize smoke in the home.
  • Extend your chimney or stack above the roofline of your and neighboring houses.
  • Watch the wind and weather - burn when smoke dispersal is away from buildings.
  • If you or your neighbors still experience smoke odors, switch to a natural gas burner.
Graphic showing proper chimney height
Stack height should always be above the roof line of neighboring buildings to ensure good smoke dispersal.

Learn More

  • Wisconsin Department of Health Services - Wood Boilers
  • Wisconsin Department of Natural Resources - Wood Boilers

Air Quality

  • Indoor Air Hazards
    • Report An Indoor Air Quality Problem
  • Outdoor Air Quality
    • Wood Smoke Pollution

Environmental Health

  • Environmental Health
    (608) 242-6515
    health@publichealthmdc.com
  • Environmental Health Laboratory
    (608) 243-0357
    health@publichealthmdc.com
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Public Health Madison & Dane County

Office Location & Hours

  • Main Phone: (608) 266-4821
  • Environmental Health Phone:
    (608) 242-6515
  • Fax: (608) 266-4858
  • WI Relay Service and Interpretation Services Available
  • Email Public Health
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    City of Madison, Wisconsin
  • Dane County Logo
    County of Dane, Wisconsin

Healthy People. Healthy Places.

Public Health Services are available to all residents and visitors of Madison and Dane County. Citizenship is not a requirement. We provide services regardless of a person's race, color, gender/gender expression, ability, religion, sexual orientation or place of birth/place of residence.

Our Mission


Working with the community to enhance, protect, and promote the health of the environment and the well being of all people.


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