King County Metro Completes Bus Fleet Air Filtration Upgrades

King County Metro announced today that all 1,200 buses in its fleet will complete HVAC upgrades by summer, installing hospital-grade air filtration systems.

Clean air public transit Seattle

Cleaner Commutes

The $4.2 million investment follows rider surveys showing air quality as the top concern for returning transit users post-pandemic.

Similar upgrades are planned for Sound Transit Link light rail by year-end.

Sarah Chen

Sarah Chen

Author & Expert

Jason Michael is the editor of northwestcleanair.com. Articles on the site are researched, fact-checked, and reviewed by the editorial team before publication. Read our editorial standards or send a correction at the editorial policy page.

87 Articles
View All Posts

Stay in the loop

Get the latest northwestcleanair.com updates delivered to your inbox.