In the City of Buenos Aires (CABA) and the Province of Buenos Aires (PBA) a maximum UV index of 11to reach the category of “extreme“. The sky will be sunny and clear, facilitating exposure to radiation.
In addition, the National Meteorological Service (SMN) forecasts critical levels in the rest of the country. In the north and in Cuyo the index rises to 13, while in northern Patagonia it reaches 11. It is recommended to avoid prolonged exposure.
What is the UV index and why is it important for health?
He UV index (IUV) is an internationally standardized measure that describes the intensity of solar ultraviolet radiation that reaches the Earth’s surface at a specific location and time. According to the World Health Organization (WHO)this indicator is expressed on a numerical scale starting from 0; the higher the value, the greater Skin and eye damage may occurand the shorter the exposure time required for injuries.
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Knowledge of this index is crucial for public health as it allows the population to anticipate the risk and take appropriate protective measures. The levels are divided into categories: low (1-2), medium (3-5), high (6-7), very high (8-10) and extreme (11 or more). The importance of this monitoring lies in the fact that UV radiation is cumulative and its harmful effects are often not felt immediately, but rather through burns or injuries that occur hours later.
The danger of the sun’s ultraviolet rays to health
Excessive exposure to ultraviolet radiation poses one of the greatest threats to the integrity of the skin and eyes. The Pan American Health Organization (PAHO) warns that UV rays cause immediate damage such as sunburn (erythema), but also serious chronic consequences such as: Skin cancer and premature aging. In addition, radiation can weaken the immune systemwhich reduces the body’s performance.
At the eye level, the sun can cause acute diseases such as photokeratinitis (burn of the cornea) and, in the long term, contribute to the development of cataracts, a leading cause of blindness worldwide. Experts emphasize that children and young people are particularly at riskas their skin is thinner and the damage sustained in childhood significantly increases the risk of suffering from serious illnesses in adulthood.
To reduce these risks, the WHO and PAHO recommend Limit sun exposure during the central daylight hours, generally between 10:00 a.m. and 4:00 p.m., when radiation is most intense. It is important to seek shade and use physical barriers such as wide-brimmed hats that cover the face, ears and neck, and tight-fitting clothing.
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Its use is also recommended Sunglasses with certified UV filter (which block 99-100% of UVA and UVB rays) and liberal use of sunscreens with a sun protection factor (SPF) of 30 or higher. This should be applied 20 minutes before going out and reapplied every two hours or after swimming or sweating, even on cloudy days.
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