Data
Heat-related deaths, world
Deaths attributable to heat each year worldwide, 1990–2021, as estimated by the Lancet Countdown (indicator 1.1.5). The numbers are modelled from temperature–mortality relationships, not counted.
Latest value
558,304deaths
World, 2021. Version 2025 report.
Heat-related deaths, world (deaths)
Show as a table
| Period | Value (deaths) | Status |
|---|---|---|
| 1990 | 260,952 | final |
| 1991 | 309,995 | final |
| 1992 | 318,293 | final |
| 1993 | 278,906 | final |
| 1994 | 354,884 | final |
| 1995 | 398,883 | final |
| 1996 | 285,125 | final |
| 1997 | 258,013 | final |
| 1998 | 574,110 | final |
| 1999 | 307,742 | final |
| 2000 | 278,617 | final |
| 2001 | 287,022 | final |
| 2002 | 402,404 | final |
| 2003 | 461,538 | final |
| 2004 | 329,810 | final |
| 2005 | 516,926 | final |
| 2006 | 390,253 | final |
| 2007 | 425,991 | final |
| 2008 | 294,318 | final |
| 2009 | 455,614 | final |
| 2010 | 721,588 | final |
| 2011 | 359,081 | final |
| 2012 | 504,462 | final |
| 2013 | 458,251 | final |
| 2014 | 448,321 | final |
| 2015 | 509,489 | final |
| 2016 | 676,006 | final |
| 2017 | 551,282 | final |
| 2018 | 507,062 | final |
| 2019 | 701,303 | final |
| 2020 | 540,304 | final |
| 2021 | 558,304 | final |
Where it comes from
- Producer
- Lancet Countdown on Health and Climate Change (led by University College London) · Lancet Countdown 2025: heat-related deaths, work hours lost to heat and heatwave exposure
- Version
- 2025 report
- Fetched
- 2026-10-04 (automatically), 137,358 bytes
- Fingerprint
- sha256 f6a18bdec8434973269c095727a13a0375e78b0e674124cf8c9827ec267131e0ETag "2188e-6425ae150d7bd" · Last-Modified Thu, 30 Oct 2025 07:05:54 GMT
- Copies
- No Wayback copy recorded yet.Our copy of the exact file
- Cite the producer
- Romanello M, Walawender M, Hsu S-C, et al. The 2025 report of the Lancet Countdown on health and climate change. Lancet 2025; published online Oct 29. https://doi.org/10.1016/S0140-6736(25)01919-1.
What was done to it
Read the AN column (number of deaths attributable to heat) of the sheet '2025 Report Data_Global' of the indicator 1.1.5 workbook of the Lancet Countdown 2025 report, one value a year 1990–2021. Values are published as in the workbook.
Code: pipeline/src/envdash/transforms/impacts/lancet_countdown.py · code sha256 fd77ef680e809205… · inputs f6a18bdec843…
The workbook's guidance sheet gives the unit of AN as deaths. The share of all deaths (AF) and the regional sheets are not published here.
Code: pipeline/src/envdash/transforms/impacts/lancet_countdown.py · code sha256 fd77ef680e809205… · inputs f6a18bdec843…
What it covers
- Geography
- World
- Basis
- Modelled in three stages (Zhao et al. 2021): the association between temperature and mortality estimated in each location, pooled by multilevel meta-regression, and predicted for all countries. Inputs include ERA5 temperatures, UN population data, the World Mortality Dataset and the Global Burden of Disease Study 2021.
- Unit
- deaths (deaths)