The Hottest Years In Human History
2023 became the hottest year ever recorded. Then 2024 surpassed it, becoming the first year in modern history to exceed 1.5 degrees Celsius above pre-industrial temperatures, the limit the Paris Agreement was designed to avoid. Then 2025 ranked as the third hottest year ever measured.
For the first time in recorded history, the planet’s three-year average temperature has now breached the 1.5 degrees Celsius threshold scientists spent 30 years trying to prevent from being crossed. It has been crossed permanently. There is no undoing it.
Right now, heat is killing approximately 550,000 people every year worldwide. That number is rising. Climate experts at the Copernicus Climate Change Service and the World Meteorological Organization say the planet is rapidly entering a new era of dangerous and prolonged extreme heat.
This is no longer a future crisis. It is happening now.
Entire Continents Are Overheating Simultaneously
South Asia saw temperatures between 46 and 50 degrees Celsius across India, Pakistan, and Bangladesh during April and May 2026. Karachi reached 44.1 degrees Celsius despite usually being moderated by Arabian Sea winds. Scientists say official heat death figures are almost certainly undercounted because heat is rarely listed as the primary cause of death.
In Southeast Asia, real-feel temperatures reached 53 degrees Celsius in parts of the Philippines. Thailand cut its 2026 tourism targets by 6.7 million visitors because outdoor conditions became dangerous. Malaysia’s Muda Dam dropped to only 7.4% capacity while drought and saltwater intrusion damaged rice production in Vietnam by 10%.
Australia simultaneously faced near-50 degree Celsius temperatures and destructive wildfire conditions. In Latin America, Mexico recorded 52.7 degrees Celsius while drought spread across 85% of the country. Europe suffered repeated heatwaves severe enough to disrupt energy infrastructure. France’s Golfech Nuclear Power Plant shut down a reactor and the Bugey plant reduced output because the rivers used to cool them became too warm. Scientists estimate around 16,500 people died during Europe’s 2025 summer heatwaves alone.
Meanwhile, the United States just recorded its warmest 12-month period in 132 years of national records.
The Climate Crisis Is Deepening Global Inequality
The people least responsible for climate change are paying the highest price.
Pakistan contributes less than 1% of global carbon emissions yet faces deadly heat, glacier collapse, and flood risks simultaneously. The Philippines contributes a fraction of global emissions while millions endure near-unsurvivable conditions. Women are dying from heatwaves at higher rates than men. During Europe’s 2025 heatwaves, women experienced 56% more heat-related deaths than men, with elderly women among the most vulnerable group of all.
Scientists project that by 2050, roughly 90% of all heat-related deaths will occur in low and middle-income countries, ten times more deaths in poor nations than in wealthy ones.
Outdoor workers carry the sharpest burden. A rice farmer in Vietnam’s Mekong Delta, a delivery rider in Bangkok, a construction worker in Karachi. They have no air conditioning, no flexible hours, and in most countries no legal protection from heat-induced injury. They are surviving temperatures the human body was never designed to endure for extended periods.
The Super El Nino Threat Could Make Things Worse
Scientists are now closely watching the Pacific Ocean for signs of a new El Nino event later in 2026. According to NOAA’s Climate Prediction Center, there is a 62% probability El Nino conditions develop between June and August this year. Some climate researchers fear a potential Super El Nino could intensify heatwaves, droughts, crop failures, flooding, and wildfire conditions across multiple continents simultaneously.
If that happens, 2027 could become the hottest year humanity has ever experienced.
In April 2026, the president of the United States, the country that just recorded its warmest period in 132 years, stood before a crowd in Arizona and told them the planet is getting cooler.
The climate crisis is no longer arriving slowly. For hundreds of thousands of people, it is already the cause of death.
By Shizza Farooqui
SOURCES
Reuters | Bloomberg Green | CNN | Al Jazeera | Carbon Brief | NOAA | World Meteorological Organization | Copernicus Climate Change Service | World Weather Attribution
