High heat: On India and warming

Source: The post “High heat: On India and warming” has been created, based on “High heat: On India and warming” published in “The Hindu” on 24th April 2026.

UPSC Syllabus: GS Paper-3- Environment

Context: India is experiencing unusually early and intense heatwaves, with temperatures crossing 40°C in several regions as early as April. This shift indicates a deeper structural vulnerability to extreme heat rather than a temporary climatic variation.

Causes of Increasing Heatwaves

1. The early arrival of extreme heat this year reflects changing climatic patterns linked to global warming.
2. The absence of western disturbances and thunderstorms has reduced natural cooling effects across large parts of the country.
3. Lower convective activity in the atmosphere has contributed to sustained high temperatures.
4. The lingering impact of the previous El Niño event has further intensified heat conditions.
5. Urban heat island effects have aggravated local temperatures, particularly in cities.
6. Coastal regions are facing compounded heat stress due to high humidity, which increases discomfort and health risks.

Impacts of Extreme Heat

1. Extreme heat is increasing the risk of mortality, particularly due to cardiovascular complications.
2. Warmer nights are preventing adequate physiological recovery, thereby increasing the health burden.
3. The economic cost is significant, with approximately 247 billion work hours lost in 2024 due to heat stress.
4. Workers in sectors such as construction and agriculture are disproportionately affected due to prolonged outdoor exposure.
5. Heat stress during the rabi harvest is creating serious challenges for farmers.
6. High temperatures are accelerating crop maturity, which threatens agricultural productivity and food security.
7. These agricultural impacts may contribute to inflationary pressures in the economy.
8. Extreme heat is also affecting democratic participation, as seen when voters faced difficulties during elections conducted in high temperatures.

Limitations of Existing Response (Heat Action Plans – HAPs)

1. Heat Action Plans in India are largely focused on emergency response rather than long-term adaptation.
2. There is insufficient funding for structural interventions such as urban greening and climate-resilient infrastructure.
3. Measures to protect informal sector workers from heat exposure remain weak or poorly enforced.
4. Current strategies fail to address underlying vulnerabilities such as poor housing, lack of cooling access, and income insecurity.
5. Administrative responses tend to be reactive, such as extending polling hours, rather than preventive.
6. Public health systems are not adequately equipped to provide widespread and proactive heat-related services.

Way Forward

1. India must transition from short-term emergency responses to long-term climate adaptation strategies.
2. There should be increased investment in urban planning measures such as green cover, cool roofs, and heat-resilient infrastructure.
3. Heat Action Plans should be strengthened with dedicated funding and institutional accountability.
4. The government should enforce mandatory heat safety standards, especially for vulnerable workers in the informal sector.
5. Public health systems should be expanded to ensure timely and doorstep delivery of essential services during heatwaves.
6. India should leverage international platforms to access greater climate adaptation finance.
7. Community awareness and local-level preparedness should be enhanced to reduce the impact of extreme heat.

Conclusion: The growing intensity and frequency of heatwaves in India highlight a structural crisis that demands urgent attention. Addressing underlying vulnerabilities through sustained policy action, investment, and institutional strengthening will be critical to building long-term resilience.

Question: Heatwaves in India are no longer seasonal anomalies but structural challenges.” Discuss the causes, impacts, and limitations of India’s response to extreme heat. Suggest a way forward.

Source: The Hindu