Additional information about the need for protection is provided in the UV index that tells the amount of harmful radiation from the sun. The need for protection starts when the index is three or above.
The Finnish Meteorological Institiute shares the index along with the daily forecasts. The LV Sundial, on the other hand, visualizes how long a stay in sunshine is recommended. Remember to protect yourself whenever the UV index is above 3, and protect yourself before going out – when the skin burns the damage is already done.