Fireworks are legal in the State of Washington. Cities and counties must comply with statewide minimum standards regarding fireworks but are permitted to adopt ordinances that are more restrictive than minimum standards, including prohibitions on consumer fireworks. Ordinances that are more restrictive than state law, including prohibitions on consumer fireworks, do not take effect until one year after adoption.
An ordinance enacting a prohibition on consumer fireworks takes effect within 90 days rather than one year after adoption. After consultation with a local fire marshal or other fire official, counties and cities may immediately prohibit the use of consumer fireworks when the risk of an uncontrolled fire due to fireworks and environmental conditions is high and other temporary burning prohibitions are in effect.