The Infectious risk has shown an upward trend over the past 12 weeks, ending the period at its highest level..
Allergy risk activity has remained stable over the past 12 weeks in Hamlin, South Dakota.
No Pollution activity has been reported over the past 12 weeks in Hamlin, South Dakota.
Weather risk activity has been decreasing over the past 12 weeks in Hamlin, South Dakota.
Last updated: August 24, 2026
Data refreshed weekly