Dokumen
Global Analysis: Dangerous HumidHeat Rising Due to Climate Change
Human-caused climate change is making our world hotter, stickier, and more dangerous for our health — and its influence on humid heat is accelerating. Since the 1970s, dangerous humid heat days have more than doubled globally. That’s according to a Climate Central analysis based on new, peer-reviewed research.
These findings tell a clear story: Climate change has gone from a minor contributor of dangerous humid heat days to the primary driver. In some parts of the world, humid heat that once would have been rare or nearly impossible without climate change is now a defining feature, putting the lives of millions at risk.
Key findings include:
- Dangerous humid heat days have more than doubled globally, increasing from 10 days per year during the 1970s to 23 days per year during 2016–2025.
- Nearly two-thirds (64%) of global dangerous humid heat days since 1970 can be attributed to human-caused climate change.
- Compared to the 1970s, climate change is now responsible for six times as many dangerous humid heat days each year.
- In 2025, the global average reached 23 dangerous humid heat days, with 19 days (83%) directly added by climate change.
- Additional resources, including a summary of U.S. results, interactive maps, and multimedia reporting materials, are available in the Climate Matters brief titled “Dangerous Humid Heat Rising Due to Climate Change.”
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