Temperature-Humidity Index (THI): A numerical value calculated using various methods to evaluate the combined number of air temperature and humidity, which is associated with thermal stress (Bohmanova et al., 2007).
Bohmanova, J., Misztal, I., & Cole, J.B. (2007). Temperature-Humidity indices as indicators of milk production losses due to heat stress. Journal of Dairy Science, 90(4), 1947-1956. https://doi.org/10.3168/jds.2006-513
