The city of La Paz in Bolivia’s mountains had been hit by high levels of ultraviolet (UV) radiation. UV radiation levels in the area have just reached 21 on a scale that ordinarily only goes up to 20. The World Health Organization considers a UV level of 11 to be “extreme” and advised the residents to limit their exposure to the sun. According to La Paz atmospheric physics expert Luis Blacutt, the rainy season may bring the same amount of rain as usual but only for a short time. Despite the recent rainfalls, higher UV levels are expected to remain for another week. Additionally, the UV radiation input is more noticeable due to the delayed appearance of clouds. The Andean regions of South America located in high areas are likely to experience some of the world’s most dangerous UV radiation, with levels going over 40 at times. However, numbers between 11 to 17 are more common.