Punjab air improves; 3 cities still among world’s worst (File Photo) BATHINDA: Two towns in Punjab apart from Chandigarh have ranked below 100 in the most polluted cities across the world as per its annual average particulate matter (PM2.5) in 2025.BATHINDA: Mandi Gobindgarh has been found to be most polluted in the state, which has been ranked 44 across the world with its annual average PM2.5 of 60 µg/m³ in 2025, which has been recorded down from 78.4 µg/m³ in 2024.Chandigarh has ranked at 57 with annual PM2.5 at 54.3 µg/m but down from 69.7 µg/m³ in 2024. Ludhiana has...