The warmth of the sun on your skin feels pleasant, but its invisible ultraviolet (UV) radiation can be harmful. The UV Index is an international, standardized scale that measures the strength of sunburn-producing UV radiation. It helps you assess the risk and protect yourself properly.
The scale typically ranges from 0 to 11+. The higher the value, the greater the danger.
Myth: "I can't get a sunburn if it's cloudy."
Fact: False! Up to 80% of UV rays can penetrate light cloud cover. On a cloudy summer day, the UV index can still be high.
Myth: "I'm safe inside a car."
Fact: Car side windows block UV-B rays (the main cause of sunburn), but not necessarily UV-A rays, which contribute to skin aging. Protection is important on long drives.
Myth: "I only need sun protection in the summer."
Fact: UV radiation is present all year round. In spring, skin is particularly sensitive after the winter. In winter, snow can reflect UV radiation, nearly doubling its effect—which is why sun protection is so important when skiing.
You can find the daily maximum UV Index displayed prominently on our "Today" view. It gives you a quick and easy assessment of the sunburn risk for the day. Base your protective measures on this value, not just on the temperature or the amount of sunshine.