Comparative Estimate of Life Years Lost University of Chicago's Energy Policy Institute (the same source cited in your article) provides the most consistent comparative estimates. Their 2023 report offers a stark picture: · Delhi: The most polluted megacity in the world. Residents could lose 11.9 years of life expectancy relative to the WHO guideline (5 µg/m³), and 8.5 years relative to the national standard (40 µg/m³). · Lucknow: As per annarticl, residents lose 6.5 years relative to the WHO guideline. The AQLI data often shows an even higher figure, closely aligned with the broader Indo-Gangetic Plain. · Hyderabad: Residents could lose approximately 3.5 - 4.5 years of life expectancy relative to the WHO guideline. Its from Times of India, numbers are generally better than the northern cities but still dangerously high. · Pune: Similar to Hyderabad, residents could lose approximately 3 - 4 years relative to the WHO guideline. · Bangalore: Slightly better than Hyderabad and Pune, ...