Infectious risk activity has been decreasing over the past 12 weeks in Weld, Colorado.
Allergy risk activity has been increasing over the past 12 weeks in Weld, Colorado.
No Pollution activity has been reported over the past 12 weeks in Weld, Colorado.
Weather risk activity has been increasing over the past 12 weeks in Weld, Colorado.
Last updated: May 25, 2026
Data refreshed weekly