The Core Argument

India is experiencing an accelerating warming trend — April 2026 brought severe heatwaves with temperatures 4–5°C above normal across North and Central India. The editorial argues that climate change is no longer a future risk but a present governance emergency: the IMD’s April–June 2026 forecast projects above-normal heatwave days across most of the country. India’s policy response — while improving — remains fragmented, urban-centric, and inadequately funded. The piece calls for systemic adaptation: stronger Heat Action Plans (HAPs) beyond major cities, agriculture-specific cooling protocols, vulnerable-population registries, and integration of extreme heat into disaster management frameworks at par with floods and cyclones.

India’s Warming — The Evidence

Temperature Trends

Trend Data
India’s average temperature rise +0.7°C since 1901 (IMD long-term record)
Rate of increase (recent decades) ~0.2°C per decade (accelerating)
April 2026 anomaly 4–5°C above normal in North/Central India
IMD April–June 2026 forecast Above-normal heatwave days across East, Central, NW India
Heat-related deaths in India (2025) 4,419 (CSE State of India’s Environment 2026)

Geophysical Changes

India is experiencing multiple interconnected geophysical shifts linked to warming:

  1. Monsoon disruption — Earlier onset in some years; erratic patterns; extreme precipitation events increasing
  2. Glacier retreat (Himalayan) — ~70% of Himalayan glaciers retreating; GLOF (glacial lake outburst flood) risk increasing
  3. Cyclone intensification — Arabian Sea cyclones becoming more intense; Bay of Bengal cyclone seasons extending
  4. Sea level rise — ~3 mm/year along India’s coastline; threatens coastal cities (Mumbai, Chennai, Kolkata)
  5. Groundwater depletion — 21 Indian cities could run out of groundwater by 2030 (NITI Aayog report)

The Urban Heat Island Problem

Urban Heat Island (UHI) effect adds 2–5°C to city temperatures:

  • Concrete, asphalt, and metal surfaces absorb and re-emit heat
  • Loss of urban green cover reduces evapotranspiration cooling
  • Waste heat from vehicles, buildings, industries
  • Delhi UHI: Summer temperatures 3–4°C above surrounding rural areas

Solutions for Urban Heat

Intervention Mechanism
Green roofs and walls Evapotranspiration; insulation
Cool roofs (reflective paint) Reflects solar radiation; reduces indoor cooling demand
Urban forests Direct shading + cooling (Miyawaki forests gaining traction)
Permeable pavements Water retention; reduces surface heating
Heat corridors Wind channels through urban layouts (incorporated in new town planning)

Agriculture — Most Vulnerable Sector

Impact Detail
Wheat Temperature >34°C during grain-filling → crop failure; 1°C rise = 4–5% yield loss
Rice Night temperature rise → reduced grain quality and weight
Pulses Extreme heat during flowering → pod failure
Kharif delay Heat-stressed soil reduces germination rates

Adaptation options: Heat-tolerant varieties (e.g., DBW303 wheat by ICAR), shift in sowing windows, soil moisture conservation, and precision irrigation.

India’s Heat Governance Framework

National Level

Body/Instrument Role
IMD Heatwave forecasts, colour-coded alerts
NDMA National guidelines on heat management (2016)
MoHFW National Action Plan on Climate Change and Human Health (NAPCCHH)
NAPCC National Action Plan on Climate Change — 8 missions including water and green India

Gaps

  1. HAPs exist for ~100 cities — but India has 640+ districts; rural areas unprotected
  2. No national Heat Act — heat not legally classified as a “disaster” under Disaster Management Act 2005 in all states
  3. Cooling centre availability — uneven; often inaccessible to informal workers
  4. Vulnerable population registry — no systematic identification of high-risk individuals

UPSC Angle

Paper Angle
GS1 — Geography Geophysical changes: monsoon, glaciers, sea level, cyclones
GS3 — Environment Climate adaptation, extreme heat, NDMA, HAPs
GS2 — Governance Gap between national climate policy and local implementation

Mains Keywords: Urban Heat Island, Heat Action Plan, NDMA, NAPCC, wet-bulb temperature, IMD colour-coded alerts, Ahmedabad HAP, extreme heat governance

Probable Question: “Extreme heat is India’s most underrated climate risk. Critically examine India’s preparedness to manage it.” (GS3 Mains)