ST. PAUL, Minn. — The University of Minnesota urges poultry producers to consider both temperature and humidity when assessing potential heat stress conditions.
- High humidity decreases poultry heat loss from the lungs making the birds more susceptible to heat stress.
- Example temperature and humidity indexes are available at https://lib.dr.iastate.edu/extension_ag_pubs/163/. Note that for older turkeys, temperature at 85 degrees F with humidity above 50 percent places turkeys in the danger zone, at 90 degrees F and 50 percent relative humidity the risk. . .

