July 21, 2025 12:27 am

Heatwaves in India

CURRENT AFFAIRS: Heatwaves India 2025, Urban Heat Island Effect, ILO Report Heat Stress, Informal Workers India, National Disaster Management Authority, Heat Action Plans, Urban Greening India, Agriculture & Climate Change, Productivity Heatwaves, Climate Vulnerability India, Rural Healthcare Infrastructure.

Heatwaves in India

Not Just Hot Air, But a Heated Crisis

Heatwaves in India: Heatwaves have become a yearly menace for India. While the early arrival of monsoon this year brought some temporary relief, the broader story is more serious. High temperatures continue to grip regions across the country, especially those with poor infrastructure and dense populations.

India is particularly vulnerable due to its tropical climate. Heatwaves usually occur between March and June, peaking in May. As per recent assessments, over 57% of Indian districts now face high or very high heat risk.

How Heat Hits the Economy?

The real damage goes beyond discomfort—heatwaves burn holes in the economy. The International Labour Organization (ILO) recently revealed that India lost nearly $100 billion from heat-related productivity losses. This is especially harmful to informal workers like farmers, street vendors, and construction labourers.

Here’s a shocking figure: during heatwaves in Delhi, informal sector workers saw their net earnings dip by 40%. That’s not just lost income; it’s lost meals, school fees, and medical care.

Silent Sufferers

In rural India, the impact is multiplied. A simple 1°C rise in temperature reduces wheat yields by 5.2%. That’s a massive hit to India’s food security. Also, livestock suffer heat stress, affecting milk output and animal health, especially in drought-prone areas.

During summers, many farmers temporarily shift to construction or daily wage work, but those sectors offer little protection from heat either.

Cities Get Hotter: Urban Heat Island Effect

Urban areas are facing a unique challenge called the Urban Heat Island Effect. Due to rapid urbanisation and the reduction in green spaces, cities retain more heat than nearby rural regions. Built-up areas in India expanded significantly between 2005 and 2023, making nights warmer and sleep more difficult—especially for those living in slums.

Government Actions and Future Pathways

Thankfully, steps are being taken. The National Disaster Management Authority (NDMA) has created heatwave guidelines for worker safety. Many states have launched Heat Action Plans, which include simple but life-saving ideas like distributing water, setting up shaded rest zones, and promoting urban greening.

Some regions have even tested insurance schemes for heat-impacted workers, ensuring some compensation when outdoor work becomes life-threatening.

The Rural Challenge: Infrastructure and Awareness

Rural India often lacks basic healthcare facilities and heat shelters. This makes villagers, especially the elderly and infants, more vulnerable. Solving this requires not just emergency relief but long-term planning—cool roofs, tree plantations, and public awareness campaigns.

Static Usthadian Current Affairs Table

Topic Details
Heatwave Peak Season March to June (mostly in May)
Most Affected Regions Central, Northwest, East & North Peninsular India
Districts Under Heat Risk 57% face high to very high risk
Workforce Exposed to Heat 75% (~380 million people)
India’s Economic Loss $100 billion due to productivity loss (ILO data)
Wheat Yield Loss 1°C rise = 5.2% reduction
Urban Heat Island Effect Cities hotter due to concrete, less green cover
Earnings Drop 40% fall for Delhi’s informal workers during heatwaves
Livestock Impact Health and productivity fall due to rising heat
Government Measures Heat Action Plans, NDMA guidelines
Innovative Measures Worker insurance schemes in heat-affected zones
Heatwaves in India
  1. Heatwaves in India occur from March to June, peaking in May.
  2. 57% of Indian districts face high to very high heat risk.
  3. India lost $100 billion due to heat-induced productivity losses (ILO Report).
  4. 75% of India’s workforce (~380 million) works in heat-exposed environments.
  5. Informal workers in Delhi saw 40% drop in earnings during heatwaves.
  6. 1°C temperature rise can lead to a 2% reduction in wheat yield.
  7. Urban Heat Island Effect makes cities hotter than rural areas.
  8. Rapid urbanisation between 2005–2023 increased built-up areas, worsening heat.
  9. Livestock productivity drops and health suffers in extreme heat.
  10. Non-farm workers like daily labourers shift jobs but still face heat exposure.
  11. NDMA has issued heatwave safety guidelines for workers.
  12. States are adopting Heat Action Plans (HAPs) for heatwave preparedness.
  13. Urban greening and cool roofs are key long-term solutions.
  14. Heatwave insurance schemes are being piloted in heat-affected regions.
  15. Rural areas lack adequate healthcare and heat shelter infrastructure.
  16. Heatwaves are a major cause of economic loss, health risk, and food insecurity.
  17. ILO estimates global labour productivity falls with increasing temperatures.
  18. Built-up areas retain heat, leading to warmer nights in urban zones.
  19. Livelihoods of farmers, vendors, and construction workers are hit hardest.
  20. National Disaster Management Authority (NDMA) leads central response to heat.

Q1. During which months do heatwaves typically occur in India?


Q2. According to the International Labour Organization (ILO), how much economic loss did India face due to heat-induced productivity reduction?


Q3. What percentage of Indian districts are classified under high to very high heat risk zones?


Q4. What is the estimated drop in wheat yield due to a 1°C rise in temperature?


Q5. What is the phenomenon called where urban areas retain more heat, making them hotter than rural areas?


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