The Czech Republic has recorded its highest-ever temperature, reaching 40.4°C and surpassing a previous record set in 2012. This new high comes as a wider European heatwave places significant thermal stress on cities across the continent. A recent study indicates that 45% of European cities are either experiencing or are on the verge of breaking historical heat stress records. The escalating temperatures raise concerns about public health and infrastructure. Experts attribute the extreme weather to ongoing climate change patterns. The situation highlights the increasing vulnerability of European urban centers to extreme heat events. Authorities are advising citizens to take precautions against heat-related illnesses.