The UV Index is a valuable reminder to be careful in the sun. But are you taking as much notice of it as you should? Canadian scientists developed the UV Index in 1992 to inform about the strength of the sun’s UV rays and raise awareness about taking action to protect your health. It now broadcasts its sun safety message in 26 countries, with the World Meteorological Organization and World Health Organization adopting it in 1994 as the international standard for weather services across the globe.

Why is the UV Index important?

UVB radiation – even on a cloudy day – can cause a range of debilitating conditions. It’s also cumulative, so you may not know you’ve had too much until it’s too late. According to the World Meteorological Organization, the Index has helped save lives by increasing public awareness of the effects of the sun’s damaging UV rays. Over-exposure …


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