Cattle Comfort Index Information

Cattle Comfort Index (CCI) is calculated by adjusting the air temperature using relative humidity, wind speed, and solar radiation to approximate hot and cold levels an animal is dealing with physiologically. It does not take into account precipitation and is not designed to predict apparent temperature for animals with wet hair coats. Non-acclimated or sick animals should be evaluated using the Newborn CCI. Acclimated adults with proper nutrition follow the Adult CCI values. Values are reported in degrees Fahrenheit.

CCI Category	Newborn CCI °F	Adult CCI °F
Heat Extreme Danger	>113	>113
Heat Danger	105 to 113	105 to 113
Heat Severe	96 to 104	96 to 104
Heat Moderate	87 to 95	87 to 95
Heat Mild	77 to 86	77 to 86
No Stress	42 to 76	33 to 76
Cold Mild	32 to 41	14 to 32
Cold Moderate	23 to 31	-4 to 13
Cold Severe	14 to 22	-22 to -5
Cold Extreme	5 to 13	-40 to -23
Cold Extreme Danger	< 5	< -40