UV Index 🇦🇷Argentina

Argentina spans an exceptional latitudinal range, stretching from roughly 21.8°S in Jujuy province near the Tropic of Capricorn to about 55°S at the southern tip of Tierra del Fuego, making it one of the longest north-south countries on Earth. The Andes form its western spine, culminating in Aconcagua at 6,961 m, the highest peak outside Asia. This combination of subtropical sun angles in the north, extreme altitudes along the cordillera, and high-latitude southern regions produces a uniquely broad spectrum of ultraviolet exposure regimes within a single country.

Argentina is one of the few inhabited countries directly affected by the Antarctic ozone hole: SMN (Servicio Meteorológico Nacional) and peer-reviewed studies document springtime ozone-depletion events that drift over southern Patagonia and Tierra del Fuego, transiently elevating surface UV. Ushuaia is among the world's closest cities to the ozone hole and SMN issues dedicated UV index forecasts and warnings. At the opposite extreme, the northwestern Puna plateau sits at 3–4 km elevation near the Tropic of Capricorn, where measurements have recorded some of the highest UV index values on Earth, exceeding 15.

Argentina sits at #128 of 191 in the WHO's global ambient-UV ranking with about 3,476 J/m² of average daily UV, around the 33rd percentile worldwide.