The expected increase in temperature will also expose the populations in large cities to extreme heat. Urban heat islands are already a reality in large cities in the region, such as Buenos Aires  , Rio de Janeiro   and São Paulo  , with reported impact on human health in the latter  . These cities alone represent 22 million people exposed to increased heat  and from INDEC ).
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report