The Infectious risk has shown a gradual decrease over the last 12 weeks, with the most recent week notably lower than earlier in the window..
Allergy risk activity has remained stable 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 climbing over the past 12 weeks in San Juan, Washington.
Last updated: July 6, 2026
Data refreshed weekly