The Highlands dawned under an alert issued by the National Institute of Meteorology and Hydrology (Inamhi). Given the weather conditions in Quito and several provinces of the Andes, the institution asked for precautions.
This is because ultraviolet (UV) radiation rates are extremely high. According to the agency, this causes episodes of photochemical smog; the presence of ozone in the lower layers of the atmosphere.
On September 21 and 22, 2017, the UV index is expected to fluctuate between 11 and 14 levels, which is in the extremely high category.
The recommendations of the official website of the World Health Organization are to avoid sun exposure and use sunscreens and hats. (I)