The Directorate General of Public Health of the Canary Islands Government has issued a warning about the high levels of ultraviolet (UV) radiation expected on June 11 and 12, dates on which the Supreme Pontiff will make an official visit to the Archipelago. Health risks are anticipated to reach very high levels in various areas, with particular attention on the island of Tenerife.

In Tenerife, the UV radiation map indicates several areas with very high risk in red, including municipalities such as Garachico, San Juan de la Rambla, Los Realejos, La Orotava, Puerto de la Cruz, Santa Úrsula, La Victoria de Acentejo, El Sauzal, Tacoronte, Tegueste, Santa Cruz de Tenerife, Candelaria, Arafo, Güímar, Fasnia, and Arico. These conditions necessitate reinforced protection measures, especially during outdoor activities and large gatherings.

Public Health reiterates the importance of daily application of SPF 50 sunscreen, particularly during the central hours of the day. The use of caps or hats, approved sunglasses, light clothing that covers the skin, and seeking shade whenever possible are also recommended. These recommendations are crucial given the expected large number of people in open spaces during the papal visit events in both Gran Canaria and Tenerife.

The Plan for Preventive Actions against Ultraviolet Radiation classifies risk into five levels: low, moderate, high, very high, and extreme. Each level comes with specific recommendations for the public, tailored to the potential impact of sun exposure on health. UV radiation can cause effects ranging from sunburn to DNA damage and immunosuppression, which can be a risk factor for cancer and the reactivation of viruses.