How is the extreme heat affecting Rio de Janeiro and its events?

Rio de Janeiro is experiencing severe heat conditions that have reached a level four heat alert (with five being the maximum), significantly impacting city activities. The extreme temperatures have forced a leading Samba School to cancel its parade rehearsal on Copacabana beach, while residents crowd beaches seeking relief from the heat. The Rio Open tennis tournament is particularly affected, with top tennis stars facing challenging conditions both on and off the court. This combination of extreme heat during Carnival preparation season demonstrates how climate conditions are disrupting both daily life and major events in one of Brazil's most iconic cities.