The Infectious risk has shown an upward trend over the past 12 weeks, ending the period at its highest level..
Allergy risk activity has held steady over the past 12 weeks in Jefferson, Nebraska.
No Pollution activity has been reported over the past 12 weeks in Jefferson, Nebraska.
Weather risk activity has been easing over the past 12 weeks in Jefferson, Nebraska.
Last updated: August 24, 2026
Data refreshed weekly