Infectious risk activity has been stable over the past 12 weeks in Alameda, California.
Allergy risk activity has been increasing over the past 12 weeks in Alameda, California.
No Pollution activity has been reported over the past 12 weeks in Alameda, California.
Weather risk activity has been increasing over the past 12 weeks in Alameda, California.
Last updated: May 24, 2026
Data refreshed weekly