Air pollution in India is increasingly becoming a year-round challenge rather than a seasonal phenomenon. Examine the causes and impacts of summer air pollution in Indian cities an

GS3 Environment & Bio-diversity
Air pollution in India is increasingly becoming a year-round challenge rather than a seasonal phenomenon. Examine the causes and impacts of summer air pollution in Indian cities and suggest measures for its mitigation.

Examine

  • 10 marks
  • 8 min
  • 150 words
  • Medium

The Hindu

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Introduction

Air pollution in India is no longer confined to winter months; it has evolved into a year-round environmental and public health challenge. During summer, factors such as rising temperatures, dust storms, biomass burning, industrial emissions, and ground-level ozone formation contribute significantly to deteriorating air quality in Indian cities.

Causes of Summer Air Pollution

1. Dust Storms and Natural Sources

  • Frequent dust storms originating from the Thar Desert and arid regions increase particulate matter (PM10 and PM2.5) levels.
  • Construction activities further aggravate dust pollution.

2. Ground-Level Ozone Formation

  • High temperatures accelerate photochemical reactions between Nitrogen Oxides (NOx) and Volatile Organic Compounds (VOCs).
  • Leads to the formation of ground-level ozone (O₃), a major summer pollutant.

3. Vehicular and Industrial Emissions

  • Continuous emissions from industries, thermal power plants, and automobiles contribute to year-round pollution.
  • Urban heat intensifies the concentration of pollutants.

4. Biomass and Waste Burning

  • Open burning of agricultural residue, municipal waste, and biomass releases harmful pollutants even during summer.

5. Urbanization and Heat Island Effect

  • Reduced green cover and rapid urban expansion trap pollutants and worsen air quality.

Impacts

Health Impacts

  • Increased incidence of respiratory diseases, asthma, cardiovascular disorders, and heat-related illnesses.
  • Ground-level ozone causes lung irritation and reduced pulmonary function.

Environmental Impacts

  • Reduced visibility, ecosystem degradation, and crop damage.
  • Ozone negatively affects agricultural productivity.

Economic Impacts

  • Higher healthcare expenditure and productivity losses.
  • According to the World Bank, air pollution imposes significant economic costs through reduced labour efficiency and health burdens.

Measures for Mitigation

Policy and Regulatory Measures

  • Strengthen implementation of the National Clean Air Programme (NCAP).
  • Enforce stricter industrial emission norms and dust-control regulations.

Technological Measures

  • Promote electric mobility and cleaner fuels.
  • Deploy real-time air quality monitoring and forecasting systems.

Urban Planning Measures

  • Increase urban green belts and afforestation.
  • Mandate dust suppression at construction sites.

Behavioural and Community Measures

  • Prevent open waste burning.
  • Encourage public transport and sustainable lifestyles.

Value Addition

Data

  • WHO estimates that air pollution causes approximately 7 million premature deaths annually worldwide.
  • NCAP targets up to 40% reduction in PM concentrations by 2026 (from the 2017 baseline).

Constitutional & Judicial Perspective

  • Article 21: Right to life includes the right to a clean and healthy environment.
  • M.C. Mehta v. Union of India (1987 onwards): Supreme Court recognized environmental protection as integral to fundamental rights.

Conclusion

The transition of air pollution from a seasonal to a perennial challenge underscores the need for a multi-sectoral and science-based approach. Effective regulation, cleaner technologies, sustainable urban planning, and public participation are essential to ensuring cleaner air and safeguarding public health in India's rapidly urbanizing cities.