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Exclusive: Residents of western Sydney and outer suburbs of Melbourne are at particular risk of high temperatures, data shows

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As the federal government warns the climate crisis will increase heat-related deaths, with the impact disproportionately borne by the already vulnerable, data obtained exclusively by Guardian Australia shows the parts of Australia’s major cities that are most vulnerable to heat.

The new measure, called the Heat Vulnerability Index and compiled by researchers at RMIT, combines temperature readings from satellites, with data on populations particularly susceptible to heat (such as older Australians and those with disabilities), the built environment and green space, and socioeconomic factors like income and education.