Livestock Weather Safety Index

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Livestock Weather Safety Index

Livestock Weather Safety Index Chart
Dry Bulb Temp(F)	Relative Humidity Intervals (Percent)
Dry Bulb Temp(F)	10	20	30	40	50	60	70	80	90	100
78			70	71	72	74	75	75	77	78
80		70	72	73	74	75	77	78	79	80
82	70	71	73	74	75	76	78	79	81	82
84	71	72	74	75	77	78	80	81	83	84
86	72	74	75	77	78	80	81	83	84	86
88	73	75	76	78	80	81	83	85	87	88
90	74	76	78	79	81	83	85	87	88	90
92	75	77	79	81	83	84	86	88	90
94	76	78	80	82	84	86	88	90
96	77	79	81	84	86	88	90
98	78	80	82	85	87	89
100	79	82	84	86	88	91

Adapted from "Notes on Temperature-Humidity Index", NOAA National Weather Service.
EMERGENCY STRESS - Index of 84 or Greater
DANGER STRESS - Index of 79 to 83
NO STRESS - Index of 78 or Less

DANGER - EXPECT 25% or more increase in transit loss!
EMERGENCY - EXPECT 45% or more increase in transit loss!

Contact Tom Priddy in the Dept. of Biosystems & Agricultural Engineering, U.K. College of Agriculture if you have any questions concerning this chart.