365 Days on a Warming Planet

Climate Central's global analysis using the Climate Shift Index (CSI) found that 96% of the world's population—7.6 billion people—experienced daily temperatures made warmer by human-caused climate change between October 2021 and September 2022. The study identifies the strongest influences in regions near the equator and on small islands, with Lagos, Mexico City, and Singapore emerging as the highest hotspots of human exposure when accounting for urban population. The analysis also pinpointed peak continental CSI days, noting that these do not always coincide with major heat waves.

• Human-caused climate change affected the temperatures experienced by 7.6 billion people, representing approximately 96% of the global population, during the 12-month study period from October 1, 2021, to September 30, 2022.
• The strongest influence of human-driven warming was observed in Mexico, Brazil, the Arabian Peninsula, the Malay Archipelago, and western and eastern Africa.
• Global exposure to temperatures made at least three times more likely due to climate change peaked on October 9, 2021, affecting more than 1.7 billion people.
• When accounting for urban population size, the highest total human exposure to daily temperatures altered by climate change occurred in Lagos, Nigeria; Mexico City, Mexico; and Singapore.
• Cities in small island developing states exhibited the highest average CSI scores, with Apia, Samoa and Ngerulmud, Palau ranking as the top two cities.
• The analysis identified specific peak CSI days for each continent: Oceania (October 19, 2021), Africa (November 25, 2021), Europe (February 17, 2022), South America (July 16, 2022), North America (July 19, 2022), and Asia (August 9, 2022).
• The report notes that peak continental CSI days do not necessarily align with major heat waves; for example, Europe's peak CSI influence was more widespread in February than during the July 2022 heat wave.

APA

Climate Central (2022). 365 Days on a Warming Planet. https://assets.ctfassets.net/cxgxgstp8r5d/2XzrYheK2B1zL0a1sPOgp3/b9e096a1b338401fe30401e8b9f3fd85/Climate_Central_Report_365_Days_on_a_Warming_Planet.pdf

Chicago

Climate Central. 365 Days on a Warming Planet. 2022. https://assets.ctfassets.net/cxgxgstp8r5d/2XzrYheK2B1zL0a1sPOgp3/b9e096a1b338401fe30401e8b9f3fd85/Climate_Central_Report_365_Days_on_a_Warming_Planet.pdf.

Wikipedia

{{cite report |author=Climate Central |title=365 Days on a Warming Planet |date=October 2022 |url=https://assets.ctfassets.net/cxgxgstp8r5d/2XzrYheK2B1zL0a1sPOgp3/b9e096a1b338401fe30401e8b9f3fd85/Climate_Central_Report_365_Days_on_a_Warming_Planet.pdf |access-date=23 October 2026 |via=Climate Insights Directory}}

BibTeX

@techreport{climatecentral2022365, author = {{Climate Central}}, title = {{365 Days on a Warming Planet}}, institution = {Climate Central}, year = {2022}, month = oct, url = {https://assets.ctfassets.net/cxgxgstp8r5d/2XzrYheK2B1zL0a1sPOgp3/b9e096a1b338401fe30401e8b9f3fd85/Climate_Central_Report_365_Days_on_a_Warming_Planet.pdf}, urldate = {2026-10-23}, note = {Indexed by Climate Insights Directory} }