Infectious risk activity has been increasing over the past 12 weeks in San Bernardino, California.
Allergy risk activity has been increasing over the past 12 weeks in San Bernardino, California.
Pollution risk activity has been increasing over the past 12 weeks in San Bernardino, California.
Weather risk activity has been decreasing over the past 12 weeks in San Bernardino, California.
Last updated: May 24, 2026
Data refreshed weekly
Get today's San Bernardino County health risks — Download bub