The Infectious risk has fallen noticeably over the past 12 weeks, ending the period well below its earlier peak..
Allergy risk activity has remained stable over the past 12 weeks in Jefferson, Washington.
No Pollution activity has been reported over the past 12 weeks in Jefferson, Washington.
Weather risk activity has been increasing over the past 12 weeks in Jefferson, Washington.
Last updated: July 6, 2026
Data refreshed weekly