WBGT
< 82.0°
Normal Activities
Provide at least three separate rest breaks each hour with a minimum duration of 3 minutes each during the workout.
GISD Weather
WBGT Activity Guidelines
UIL Class 3 activity and rest break guidelines based on Wet Bulb Globe Temperature (WBGT).
WBGT
82.0–86.9°
Use Discretion
Use discretion for intense or prolonged exercise. Provide at least three separate rest breaks each hour with a minimum duration of 4 minutes each.
Mandatory onsite rapid cooling zone (tub or tarp)
WBGT
87.0–90.0°
Limited Practice
Maximum practice time is 2 hours. For football, players are restricted to helmet, shoulder pads, and shorts during practice; if the WBGT rises to this level during practice, players may continue working out in football pants without changing to shorts. For all sports, provide at least four separate rest breaks each hour with a minimum duration of 4 minutes each.
Mandatory onsite rapid cooling zone (tub or tarp)
WBGT
90.1–92.0°
Minimal Practice
Maximum practice time is 1 hour. For football, no protective equipment may be worn during practice, and there may be no conditioning activities. For all sports, 20 minutes of rest breaks must be distributed throughout the hour of practice.
Mandatory onsite rapid cooling zone (tub or tarp)
WBGT
≥ 92.1°
No Outdoor Workouts
Delay practices until a cooler WBGT reading is reached.
Values above are WBGT measurements, not temperature or heat index readings. Guidelines shown are for UIL Class 3 schools.