Extreme heat events are projected to increase in frequency and intensity across North America in the coming decades . Inland urban areas in the southern and eastern USA are susceptible to urban heat island effects, particularly the Midwest/ Great Lakes regions  and also Mexico City and many other cities in Mexico . Climate change  interacting with urban form, development and systemic racism  could worsen risks from extreme heat in North American cities, especially where there is limited adaptation  . Impacts from extreme heat will be exacerbated when multiple hazards occur simultaneously  . Extreme heat events increase energy demand for space cooling in buildings, especially during peak demand periods and heatwaves . This can decrease cooling efficiency, increase emissions of GHG from electricity generation, increase refrigerant loads and associated emissions, and negatively affect air quality . Major electrical grid failure  have increased across the USA and will continue to be particularly dangerous for human health when they coincide with extreme heat events . Efforts to increase resilience of the infrastructure that cities rely on are increasing .
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report