UPSC Notes

Heatwaves and Public Health Impacts

PYQs

8

Articles

1

Momentum

21

Phase IFoundation

Background

Overview

UPSC examines the socio-economic impacts of climate change, public health challenges, disaster management, and the vulnerability of informal sector workers. Heatwaves represent a critical intersection of these themes, requiring policy responses and adaptation strategies.

Heatwaves, defined as prolonged periods of abnormally high temperatures, are a significant climate-related public health threat, leading to heatstroke, dehydration, and increased mortality, particularly among vulnerable populations like outdoor workers and the elderly. They are exacerbated by climate change and urbanisation.

Phase IIStatic core

Facts & tables

Key facts

Impacts

Cause heatstroke, exhaustion, dizziness, and can be fatal, especially for individuals engaged in outdoor physical labor.

Vulnerable Groups

Daily wage laborers, street vendors, construction workers, sanitation staff, and traffic police are disproportionately affected due to prolonged outdoor exposure.

Reporting Challenges

Significant discrepancies exist between suspected and officially confirmed heatstroke deaths, complicated by lengthy medical and administrative verification processes.

Exacerbating Factors

Climate change increases frequency and intensity of heatwaves; urban heat island effect intensifies heat stress in cities.

Reference table

Static syllabus anchors

TypeReference
Conceptual areaPublic Health
Conceptual areaDisaster Management

Reference table

Institutions & roles

BodyRole
India Meteorological Department (IMD)Issues warnings
National Programme on Climate Change and Human HealthIssues guidelines
Telangana State Disaster Management AuthorityMonitors mitigation measures
National Crime Records Bureau (NCRB)Collects data on deaths
Phase IIIExam lens

Prelims angle

Overview

Prelims angle: Multi-statement analysis

Prelims angle: Conceptual understanding

Quick revision

  • Heatwaves are prolonged periods of extreme heat, intensified by climate change.
  • Major public health threat, causing heatstroke, dehydration, and mortality.
  • Disproportionately affects outdoor workers and informal sector.
  • Challenges in accurate data collection and official confirmation of heatstroke deaths.
  • Requires comprehensive Heatwave Action Plans, early warnings, and public health preparedness.

High-confidence PYQs

Topic timeline

Public HealthDisaster Management

A heat crisis in Telangana that burns beyond the thermometer

29 May 2026 · Heatwaves are a growing public health crisis driven by climate change, severely impacting outdoor workers and posing challenges for accurate reporting and effective mitigation.

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Related topics

Current topic

Heatwaves and Public Health Impacts

Practice writing on this topic

UPSC has asked 8 linked questions on Heatwaves and Public Health Impacts in Mains. Write an answer to one — and get it evaluated.