21/10/2026
"What temperature should my incubator be set to?"
It depends on the type, and getting it wrong is a classic reason for a poor hatch.
Fan-forced (circulated air): 37.5°C
Still-air: around 39.4°C, measured at the top of the eggs
Still-air units have warmer air at the top and cooler air near the floor, so the reading is taken at egg height. Fan-forced units even it all out, so the lower figure is correct.
Check the manual for your model, then confirm with a second trusted thermometer or sensor before you set a single egg. A degree out over three weeks makes a real difference.