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