"An extreme heat day is one that is warmer than 90 per cent of all observed temperatures at the site from 1991-2020."
https://www.abc.net.au/news/2024-06-05/world-the-hottest-on-record-12-months-in-a-row/103904150
The interactive map shows the largest number of extreme heat days around the equator where temperatures are already high even without climate change.
Extreme heat days with / without climate change:
127 / 27 DR Congo
135 / 12 Indonesia
180 / 10 Ecuador
39 / 20 United States
30 / 20 Russia
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