The Infectious risk has eased over the past 12 weeks, ending the period well below its earlier peak..
Allergy risk activity has been increasing over the past 12 weeks in Shasta, California.
No Pollution activity has been reported over the past 12 weeks in Shasta, California.
Weather risk activity has been trending upward over the past 12 weeks in Shasta, California.
Last updated: August 31, 2026
Data refreshed weekly