Air Quality Closures

Air quality closures

Current library closures due to poor air quality:

No closures at this time.

Libraries will be added to this list based on their scheduled opening time or when air quality levels reach 151 or higher. Please check back often.

Last updated: Oct. 5, 9:00 a.m.

How closure decisions are made:

For the safety of the staff, libraries will close when air quality reaches unhealthy levels.

Cal/OSHA requires the County to monitor the air quality index and take action to reduce employee exposure to wildfire smoke.

Direction from the County’s Risk Management Department during a smoke event is to work in enclosed buildings filtered by mechanical ventilation systems keeping windows, doors, bays, and other openings closed. And if the air quality index for particulate matter reaches the unhealthy level or 151, limit outdoor exposure to one hour or less.

Providing Front Door Service under these circumstances does not allow employees to follow the County’s protective measures and puts their health at risk.

Library staff are making every effort to contact patrons with appointments in advance to let them know about closures and that appointments are cancelled.

Wildfire season in California continues into November and more air quality closures are likely. Please contact your community library, and speak to a staff member before picking up materials, to ensure it is open.

You can check the air quality levels at

At most libraries, staff will remain on-site and reopen if air quality conditions improve. Libraries without filtered air will close for the day (Crockett, El Cerrito, Kensington, Rodeo.)

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