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Heatwaves and Public Health Impacts

Environment & Ecology

  • PYQs8
  • Articles1
I

Background

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.

II

Facts & tables

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.
Static syllabus anchors
Type Reference
Conceptual area Public Health
Conceptual area Disaster Management
Institutions & roles
Body Role
India Meteorological Department (IMD) Issues warnings
National Programme on Climate Change and Human Health Issues guidelines
Telangana State Disaster Management Authority Monitors mitigation measures
National Crime Records Bureau (NCRB) Collects data on deaths
III

Prelims angle

Prelims angle: Multi-statement analysis

Prelims angle: Conceptual understanding

  • 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 PYQ links
Year Framing tags
2025 Multi-statement analysis, Conceptual understanding
2025 Multi-statement analysis, Conceptual understanding
2025 Statement-based questions, Conceptual understanding
2025 Factual recall, Institutional roles and functions
2025 Multi-statement analysis, Factual recall
2023 Statement-based questions, Conceptual understanding
2020 Multi-statement analysis, Factual recall
2016 Policy measures, Purpose or function of a policy tool

Timeline

  1. Public Health

    Conceptual area

  2. Disaster Management

    Conceptual area

  3. Prelims 2016

    Policy measures, Purpose or function of a policy tool

  4. Prelims 2020

    Multi-statement analysis, Factual recall

  5. Prelims 2023

    Statement-based questions, Conceptual understanding

  6. Prelims 2025

    Multi-statement analysis, Conceptual understanding

  7. Prelims 2025

    Multi-statement analysis, Conceptual understanding

  8. Prelims 2025

    Statement-based questions, Conceptual understanding

  9. Prelims 2025

    Factual recall, Institutional roles and functions

  10. Prelims 2025

    Multi-statement analysis, Factual recall

  11. A heat crisis in Telangana that burns beyond the thermometer

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

See also

Heatwaves and Public Health Impacts
Urban Heat Island Effect

Past papers

In the news

Try these PYQs

UPSC Prelims 2025 medium Environment & Ecology Open full page

The World Bank warned that India could become one of the first places where wet-bulb temperatures routinely exceed 35 °C. Which of the following statements best reflect(s) the implication of the above‐said report?

I. Peninsular India will most likely suffer from flooding, tropical cyclones and droughts.
II. The survival of animals including humans will be affected as shedding of their body heat through perspiration becomes difficult.

Select the correct answer using the code given below.

UPSC Prelims 2025 hard Environment & Ecology Open full page

Consider the following statements:

Statement I:
At the 28th United Nations Climate Change Conference (COP28), India refrained from signing the “Declaration on Climate and Health”.

Statement II:
The COP28 Declaration on Climate and Health is a binding declaration; and if signed, it becomes mandatory to decarbonize health sector.

Statement III:
If India’s health sector is decarbonized, the resilience of its health-care system may be compromised.

Which one of the following is correct in respect of the above statements?

UPSC Prelims 2020 easy International Relations Open full page

Consider the following pairs

| International Agreement | Set-up Subject |
|--------------------------|----------------------------|
| 1. Alma-Ata Declaration | Healthcare of the people |
| 2. Hague Convention | Biological and chemical weapons |
| 3. Talanoa Dialogue | Global climate change |
| 4. Under2 Coalition | Child rights |

Which of the pairs given above is/are correctly matched?

UPSC Prelims 2025 easy Geography Open full page

Consider the following statements:

I. Without the atmosphere, temperature would be well below freezing point everywhere on the Earth's surface.
II. Heat absorbed and trapped by the atmosphere maintains our planet's average temperature.
III. Atmosphere's gases, like carbon dioxide, are particularly good at absorbing and trapping radiation.

Which of the statements given above are correct?

UPSC Prelims 2016 medium Environment & Ecology Open full page

Which of the following best describes the aim of ‘Green India Mission’ of the Government of India?
1. Incorporating environment benefits and costs into the Union and State Budgets thereby implementing the ‘green accounting’.
2. Launching the second green revolution to enhance agriculture output so as to ensure food security to one and all in the future.
3. Restoring and enhancing forest cover and responding to climate change by a combination of adaptation and mitigation measures.

Select the correct answer using the code given below

Show 3 more PYQs
UPSC Prelims 2023 hard Environment & Ecology Open full page

Consider the following statements:
Statement-I: Carbon markets are likely to be one of the most widespread tools in the fight against climate change.
Statement-II: Carbon markets transfer resources from the private sector to the State.

Which one of the following is correct in respect of the above statements?

UPSC Prelims 2025 easy Environment & Ecology Open full page

Which organization has enacted the Nature Restoration Law (NRL) to tackle climate change and biodiversity loss?

UPSC Prelims 2025 hard Environment & Ecology Open full page

Consider the following statements:

Statement I:
Article 6 of the Paris Agreement on climate change is frequently discussed in global discussions on sustainable development and climate change.

Statement II:
Article 6 of the Paris Agreement on climate change sets out the principles of carbon markets.

Statement III:
Article 6 of the Paris Agreement on climate change intends to promote inter-country non-market strategies to reach their climate targets.

Which one of the following is correct in respect of the above statements?