The Infectious risk has risen noticeably over the past 12 weeks, reaching a notably higher level in the most recent week compared to prior weeks..
Allergy risk activity has held steady over the past 12 weeks in Fall River, South Dakota.
Pollution risk activity has been climbing over the past 12 weeks in Fall River, South Dakota.
Weather risk activity has been trending upward over the past 12 weeks in Fall River, South Dakota.
Last updated: August 24, 2026
Data refreshed weekly