Harvard Study Warns: Pollution Masking India’s True Heat Crisis
Harvard University's Salata Institute’s research reveals India's slower temperature rise is owing to pollution masking heat; as air cleans, deadly heat risks and rainfall changes may surge by 2030
April 21, 2026 - A Harvard University's Salata Institute’s research has flagged a climate crisis which India could face in the coming years and how the country may need to adapt to extreme heat. The study points out that currently, India is recording a slower rise in temperature in comparison with other countries across the world. While the global average temperature has already increased by 1.4°C between 1980-2024, in India this rise has been only 0.88°C.
The reason for this is the heavy pollution across Indian skies which is protecting Indians from the intense heat, as per the new White Paper from Salata Institute’s Climate Adaptation in South Asia. Air pollution particles absorb sunlight or reflect it back into space. As a result, less heat reaches the ground. At the same time, increasing irrigation in agriculture keeps the surface cooler through evapotranspiration. Together, these create a “radiative mask” that has partially protected the country from extreme heat.
But, according to the Harvard University research, as pollution decreases, the climate crisis may emerge at full intensity.
Under the National Clean Air Programme, the Government of India is working to reduce pollution, which is essential for health. However, as the air becomes cleaner, this “shield” will disappear and temperatures may rise rapidly. The study estimates that by 2030, nearly 200 million people in India could be exposed to lethal heat, especially in North India where sudden temperature spikes may occur after winter.
According to the report, the biggest impact of this change will be on the country’s workforce. Around 75% of the workforce, approximately 380 million people, are engaged in agriculture, construction and outdoor jobs. Rising heat will reduce working hours, affecting the economy and GDP.
Rainfall patterns may also change. By the end of the century, rainfall could increase by 20% to 60%. This will pose a major challenge for farmers, increasing the need for accurate and long-term weather forecasting.
Along with controlling pollution, India also needs to think in this direction.
Source: Media Reports
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