Health Advice UTCI

Health advice and preventive measures - Heat and cold stress
UTCI (°C) Thermal stress category Health advice and protection measures
below -40 Extreme cold stress Extreme cold spell warning!
Stay at home.
If outdoor exposure is necessary, use heavy and wind protected clothing.
-40 to -27 Very strong cold stress Cold spell warning!
Intensify activity and protect face and extremities against cooling.
Use warmer clothing.
Reduce outdoor exposure time.
-27 to -13 Strong cold stress Intensify activity and protect face and extremities against cooling.
Use warmer clothing.
-13 to 0 Moderate cold stress Intensify activity and protect face and extremities against cooling.
0 to 9 Slight cold stress Use gloves and hat.
9 to 26 Comfort, no thermal stress  
26 to 32 Moderate heat stress Drink more than 0.25 liter per hour.
32 to 38 Strong heat stress Limit direct sun exposure. Use shaded places.
Reduce physical activity temporarily, move it to morning hours.
Drink more than 0.25 liters per hour.
Limit alcohol, prefer light meals.
Protect children, single elderly and people in need of care.
38 to 46 Very strong heat stress Heatwave warning!
Avoid direct sun exposure. Shaded places necessary.
Reduce physical activity to a minimum.
Temporary body cooling recommended.
Drink more than 0.5 liters per hour.
Avoid alcohol, prefer light meals.
Temporary use of air conditioning, keep your apartment cool. Protect your rooms from direct sunlight.
Wear light and comfortable clothing.
Protect children, single elderly and people in need of care.
above 46 Extreme heat stress Extreme heatwave warning!
No direct sun exposure. Stay in the shaded places.
No physical activity.
Temporary body cooling and drinking more than 0.65 liters per hour necessary.
No alcohol, light meals.
Use of air conditioning, keep your apartment cool. Protect your rooms from direct sunlight.
Wear light and comfortable clothing.
Protect children, single elderly and people in need of care.