| WBGT |
Level |
Activity & Rest Break Guidelines |
| Under 81 |
No Flag |
Normal activities |
| 82.0-86.9 |
Green Flag |
Three (3) separate four (4) minute rest breaks per hour of activity |
| 87.0-89.9 |
Yellow Flag |
Maximum two (2) hour activity time. Four (4) separate four (4) minute rest breaks per hour of activity. For football, student-athletes are restricted to helmet, shoulder pads and shorts during activity. |
| 90.0-91.9 |
Red Flag |
Maximum one (1) hour activity time. Five (5) separate four (4) minute rest breaks. No protective equipment permitted. No conditioning activities permitted. |
| Over 92.0 |
Black Flag |
No outdoor workouts; Cancel exercise, delay practices until a cooler WEBGT reading occurs |