• The Ultra Violet Index


    You probably heard the term “UV index” but didn’t quite know how to decipher the meaning and the impact it has in our lives? Well, here’s an explanation that might help you understand UV rays and sun exposure better.

    Sun shines at different intensities throughout the day and year, also depending on other factors like season, weather conditions and geographical area.
    The universal measurement standard for the intensity of the solar radiation is the UV Index.
    The values of this intensity are varied on the globe and usually range between 0 and 13 – with top values of 8 to 10 reached in the afternoon on a clear sky day, but can also reach values of 12 or 13 in the Southern hemisphere because of the quality of the ozone layer in this area. A value of 0 (zero) UV is equivalent to 0 radiation and this occurs at night time. For a day time UVI, accurate information can be found on most weather websites. It is very useful to check this index daily as it can be quite high even during cloudy days or during winter, when you normally don’t expect it. In such cases with UVI over 3, sun screen is always recommended especially for the ones with sensitive/fair skin. People with darker skin should start wearing sun screen at UV values greater than 5.

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