- In wintertime, up to 80 percent of the fine particle pollution in neighborhoods comes from chimney smoke. Read more.
Library
From technical reports summarizing air quality trends to fact sheets about pollutants - this is your one-stop shop for Clean Air Agency publications and related resources.
Start perusing here...
Reports
Includes annual air quality summaries, technical reports, and public opinion surveys.
Fact Sheets
Information at a glance, when you need it.
Clean Air Calendar
Archive of our annual reports
Glossary
Not sure what a "diesel oxidation catalyst"is? Or a "SIP"? Find out here.
Regulations
Agency regulations, recent updates, and links to Washington State law.
Event Archive
Links to recent meetings and conferences hosted or sponsored by the Clean Air Agency.
