CNN —Summer is notorious for producing punishing heat waves, often referred to as heat domes. Most heat records are set within a heat dome. Sanjeev Verma/Hindustan Times/Getty Images• Chicago, 1995: More than 700 people died in the metro area as a heat dome settled over the Midwest. This new all-time high temperature broke the record set two days earlier at 113 during an unusually strong heat dome for the month of June. • Siberia set dozens of records in June as temperatures climbed above 100 degrees during a heat dome that formed especially far north.

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Persons: Sanjeev Verma, Ian Waldie, Del, •, Tuong Duong, Maximiliano Herrera Organizations: CNN, Hospital, Hindustan Times, Environment, Central America, Nature Communications, • Shanghai Locations: Europe, France, • India, Delhi, New Delhi, India, Chicago, Afghanistan, Papua New Guinea, Central, Guatemala, Honduras, Nicaragua, Trafalgar, London, South Texas, Del Rio, Vietnam’s, Tuong, Thailand, Bangkok, Siberia