Delhi again found most polluted; study finds persistently high PM2.5 levels across India

Delhi emerges as India’s most polluted region, with PM2.5 levels a staggering 20 times the WHO guideline. A new satellite study reveals the Indo-Gangetic airshed remains critically polluted, while the Northeast, particularly Assam-Tripura, is a growing concern. This year-round crisis demands a shift from city-centric to airshed-based pollution management.