🐅 Environment
Super El Niño could cause 55,000 extra heat deaths in India by March 2027, says study
In 60 seconds: A super El Niño could cause about 55,000 extra heat-related deaths in India between October 2026 and March 2027, mostly in March, according to new projections by the University of Chicago's Climate Impact Lab. Its September report had estimated 15,800 for September to February. Only Nigeria, at about 56,000, faces a higher toll in this period. Worldwide, the lab now projects about 857,000 extra deaths from June 2026 to March 2027.
Why it matters
India has the second-highest projected toll in the world. Early warnings can help states prepare heat action plans before the hot months, instead of after deaths begin.
Explain it simply
A cup of chai left on a warm stove keeps getting hotter. El Niño is like that extra stove under a planet already warmed by climate change.
The 3-minute read
What happened
For October 2026 to March 2027 alone, the lab projects about 373,000 extra deaths worldwide, with Nigeria and India the worst hit. Much of the burden falls on countries of the Global South.
Background
The estimates were raised because August and September were warmer than forecast and the period was extended to include March 2027.
How it works
The lab's new El Niño Heat Mortality Tracker gives monthly heat-death projections up to six months ahead, with state- and province-level data, to help governments and aid groups target help.
What's next
Researchers warn that the heat seen in this El Niño resembles what climate projections suggest could become normal in about 20 years.
What it means for you
Heat harms outdoor workers, the elderly and children most. Drink water often, avoid the midday sun and know the signs of heatstroke.
Key numbers
- 55,000: Projected extra heat deaths in India, Oct 2026–Mar 2027
- 857,000: Projected extra deaths worldwide, Jun 2026–Mar 2027
- 1.63°C: September 2026 above pre-industrial levels
Both sides
- Researchers: Knowing in advance where heat will kill lets governments act before lives are lost.
- Cautious readers: These are model projections that have already changed sharply in a month, so they show risk, not certainty.
Key terms explained
- El Niño
- A periodic warming of the tropical Pacific Ocean that disturbs weather around the world.
- Heat-related deaths
- Deaths caused or worsened by extreme heat, such as heatstroke or strain on the heart.
The story so far
- Aug–Sep 2026: August is the warmest on record; September the second-warmest. Europe's Copernicus Climate Change Service found global temperatures above 1.5°C over pre-industrial levels for two months in a row. September averaged 16.27°C, 1.63°C above that baseline.
- Sep 2026: Climate Impact Lab estimates 15,800 extra heat deaths in India. The lab's September report covered September 2026 to February 2027. It projected 451,000 extra deaths worldwide from June 2026 to February 2027.
- Today: Study projects 55,000 extra heat deaths in India from super El Niño by March 2027
Exam notes (UPSC, SSC, Banking, PSC)
- El Niño is the unusual warming of sea-surface waters in the central and eastern equatorial Pacific Ocean; La Niña is the cooling phase.
- Together they form the El Niño–Southern Oscillation (ENSO); El Niño years are often linked to weaker Indian monsoons.
- The Copernicus Climate Change Service (C3S) is run by the European Centre for Medium-Range Weather Forecasts for the European Union.
- The Paris Agreement (2015) aims to limit warming to well below 2°C, pursuing 1.5°C, above pre-industrial levels.
Likely exam question: What is El Niño? How does it affect India's weather and public health?