Heat Index: Summary of Risk Levels and Associated Protective Measures The most critical actions to take to help prevent heat-related illness at each risk level:
| Heat Index | Risk Level | Protective Measures |
| <91°F | Lower |
|
Heat Index: Summary of Risk Levels and Associated Protective Measures The most critical actions to take to help prevent heat-related illness at each risk level:
| Heat Index | Risk Level | Protective Measures |
| <91°F | Lower |
|
