The Infectious risk has shown a gradual decrease over the past 12 weeks, with the most recent week notably lower than earlier in the window..
Allergy risk activity has been trending upward over the past 12 weeks in Sitka, Alaska.
No Pollution activity has been reported over the past 12 weeks in Sitka, Alaska.
Weather risk activity has been increasing over the past 12 weeks in Sitka, Alaska.
Last updated: July 13, 2026
Data refreshed weekly