India's Air Quality Crisis in 2025

Summary of Air Quality Life Index (AQLI) 2025 Annual Update

The Air Quality Life Index (AQLI) 2025 report, prepared by the Energy Policy Institute at the University of Chicago, reveals concerning air pollution levels in India and globally. The report highlights that almost all of India’s population resides in areas where annual average particulate pollution (PM2.5) exceeds the World Health Organization (WHO) recommended limit of 5 µg/m³. The northern plains of India pose the greatest risk, exposing approximately 544.4 million individuals to substandard air quality.

Key Findings:

• Air Quality in India:

  • Every resident in India breathes air classified as unsafe by WHO standards.
  • A significant 46% of Indians live in regions where the national annual PM2.5 limit of 40 µg/m³, which is already far more lenient than the WHO threshold, is breached.

• Life Expectancy Impact:

  • If Delhi lowers its particulate matter pollution levels to meet WHO guidelines, residents could gain an additional 8.2 years in life expectancy.
  • Nationwide, residents in even the cleanest areas could see improvements in life expectancy by 9.4 months if air quality issues are addressed.

• Regional Pollution Issues:

  • South Asia pollution is exacerbated by emissions from India, Pakistan, Nepal, and Bangladesh.
  • Bangladesh has the highest PM2.5 concentration in the region, measured at 12 times the WHO guideline, with potential improvements in air quality possibly adding an average of 5.5 years to lives there.

• Comparative Analysis:

  • China reported a slight increase of 2.8% in PM2.5 concentration in 2023; however, its overall pollution levels have decreased significantly by 40.8% since 2014.
  • Policies such as reducing car usage in urban areas, controlling industrial emissions, and transitioning heating sources have contributed to this long-term improvement in air quality.

• Global Context:

  • The report noted a 1.5% rise in global PM2.5 levels in 2023, exceeding WHO limits by nearly five times, marking particulate pollution as the greatest external threat to human life expectancy.
  • The United States and Canada faced significant pollution spikes in 2023, primarily due to extensive wildfires.
  • Latin America's most polluted country is Bolivia, which has reentered the top ten most polluted nations for the first time since 2010.
  • Certain regions in Africa reported a decline in air pollution, although Cameroon and the Democratic Republic of the Congo faced increasing pollution that now poses greater health risks than diseases like HIV/AIDS and malaria.

Conclusions: The AQLI report reveals critical insights into the air quality crisis, indicating that without immediate and effective measures, the health and life expectancy of millions could be severely compromised. The interdependence of cross-border pollution in South Asia highlights the need for collaborative regional strategies to tackle air quality challenges.

Important Points:

• Nearly all Indians breathe unsafe air.
• Northern states have the highest pollution levels.
• PM2.5 exposure can shorten life expectancy significantly.
• Bangladesh is the most polluted country in the region.
• China's proactive policies have led to a notable long-term decrease in pollution.
• Global PM2.5 levels are alarmingly high, impacting life expectancy severely.
• The U.S. and Canada faced increases in pollution due to environmental disasters.
• Air pollution in some African nations poses greater risks than infectious diseases.