A stage 1 burn ban went into effect Wednesday in Pierce and Snohomish counties.
The Puget Sound Clean Air Agency said the ban is needed to reduce pollution in the air.
A stage 1 burn ban means no burning is allowed in wood-burning fireplaces, uncertified wood stoves or fireplace inserts.
Residents with no other adequate heat source can be excluded from the ban but must have approval from the agency.
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Outdoor fires are also prohibited.
Violations can mean a $1,000 penalty.