Low Covid-19 risk in Stephenson, Illinois.
Low Flu risk in Stephenson, Illinois.
Low Rsv risk in Stephenson, Illinois.
Low Infectious risk in Stephenson, Illinois.
Very high Allergy risk in Stephenson, Illinois.
Low Pollution risk in Stephenson, Illinois.
Low Weather risk in Stephenson, Illinois.
Last updated: April 20, 2026
Data refreshed weekly