Translate wet-bulb readings into a practical humidity estimate.
Use this for older incubation references, then compare with your incubator manual and hatch results.
Estimated RH 53%
A reasonable mid-incubation humidity estimate for many chicken hatches.
13.5 spread
Use as an estimate
Wet-bulb conversion depends on pressure, airflow, and measurement setup. Treat this as a planning estimate, then confirm with air-cell growth and hatch results.
Open humidity chart