What the colors indicate
 
Livestock Heat Stress
NOT AVAILABLE - Data not available
NO STRESS - Conditions are favorable to move livestock around the farm or to market
DANGER LIVESTOCK HEAT STRESS - Livestock heat stress Marginal! EXPECT 25% or more increase in transit loss!
EMERGENCY LIVESTOCK HEAT STRESS Livestock heat stress Unfavorable! EXPECT 45% or more increase in transit loss! It is suggested to provide plenty of (shaded) water for livestock and minimize movement of livestock around the farm or to market.

Livestock Weather Safety Index Chart

Dry
Bulb
Temp(F)
Relative Humidity
Intervals (Percent)
102030405060708090100
78 7071727475757778
80 707273747577787980
8270717374757678798182
8471727475777880818384
8672747577788081838486
8873757678808183858788
9074767879818385878890
92757779818384868890
947678808284868890
9677798184868890
98788082858789
100798284868891

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.