Delhi’s PM2.5 levels worst in the world

• A global analysis found that Indian cities are among the highest in the world while recording PM2.5 emissions.

Key Highlights

• Striking difference in Global patterns for exposures to key air pollutants:
• Exposures to PM2.5 pollution tend to be higher in cities located in low- and middle-income countries,
  • Highest in populous cities of South East Asia, sub-Saharan Africa and Latin America
• Exposure to NO2 is high across cities in high-income as well as low- and middle-income countries.

• Delhi and Kolkata were ranked first and second in the list of top 10 most polluted cities when PM2.5 levels were compared.
• No Indian city in top 10 or 20 - polluted cities when N02 levels were compared.
• Cities with high NO2 population levels included Moscow, Beijing, Paris, Istanbul and Seoul.

Prelims Take Away

• PM 10
• PM 2.5