The Infectious risk has steadily declined over the past 12 weeks, with the most recent week notably lower than earlier in the window..
Allergy risk activity has been trending downward over the past 12 weeks in San Juan, Washington.
No Pollution activity has been reported over the past 12 weeks in San Juan, Washington.
Weather risk activity has been trending downward over the past 12 weeks in San Juan, Washington.
Last updated: August 24, 2026
Data refreshed weekly