system. With increased global cooperation and improved education about the dangers of chronic sun exposure, organizations like the World Health Organization are hopeful that we can make big strides in personal and global sun protection habits. Summertime values in northern latitudes rarely exceed 8. Language links are at the top of the page across from the title. ", "SunSmart Global UV App helps protect you from the dangers of the sun and promotes public health", "Your Time in the Sun, Measured to the Minute", https://en.wikipedia.org/w/index.php?title=Ultraviolet_index&oldid=1148252647, Articles with unsourced statements from July 2022, Creative Commons Attribution-ShareAlike License 3.0. This indicator provides state and county level data on monthly and annual average exposure to sunlight. The UV index values are grouped into five People with fair skin types (I and II on the chart) have lower levels of naturally occurring melanin when compared with darker skin tones (V and VI), meaning they need to take additional care to prevent severe sunburns and skin damage. These cookies may also be used for advertising purposes by these third parties. WebThese maps show the average annual, monthly and seasonal values of the UV Index over Australia for the period 1979-2007 under cloud-free conditions at local noon, when the sun is at its highest. Table 1 below shows the average UV Index (UVI) levels for regions across New Zealand and Australia based on latitude. The UV index is a measure of the amount of ultraviolet radiation reaching the earths surface. Because of the natural rotation and orbit of the Earth around the Sun, countries that are near the equator will experience the harshest increases in UV radiation exposure as a result of ozone depletion. it in presentations, web pages, newspapers, blogs and reports. NREL Cookies used to make website functionality more relevant to you. Since its initial publication in 1995, many countries have been using the UVI to promote sun protection along with the weather forecast in newspapers, TV and radio. Shown to be incredibly effective at reducing the penetration power of UVB rays, freshly applied SPF 50 sunscreen can block up to 98% of the UVB rays your skin is exposed to while you are out in the sun (5). The UV Index does not drop below 11 at any point in the year, which means that there is a constant and extreme risk of harm. Official websites use .gov Generously apply broad spectrum SPF 15+ sunscreen every 1.5 hours, even on cloudy days, and after swimming or sweating. Table 1 below shows the average UV Index (UVI) levels for regions across New Zealand and Australia based on latitude. Capable of causing a sunburn on unprotected skin in under 45 minutes, places like Norway and Denmark with an average UV index of 5 or 6 can still be dangerous, especially for those with fair skin tones. Reduce time in the sun between 10 a.m. and 4 p.m. Based on a wide variety of factors such as geographical location, cultural practices, and the ethnicities of the inhabitants, some countries experience significantly higher rates of skin cancers than others. The specified UV Index values serve as a benchmark for a typical atmospheric condition at each respective location. The UV Index scale ranges from a low of zero to a high of 11+ in Canada, The highest values occur in southern Ontario, where values of 11, or even 12 on rare occasions, have occurred. Sun protection is important in all settings, in particular at all outdoor recreation sites such as beaches and sports centres.

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