After seven years, 2023 bucks the declining trend in PM2.5 in Delhi

Delhi's annual PM2.5 levels saw a 2% increase in 2023, interrupting the previous decline. Despite meeting the air quality standards for 151 days, the city experienced a significant decrease in 'good' air days compared to 2022. The winter of 2023 had the highest number of smog episodes in the past six years, indicating a...