Our 373 is their 1,747: How official AQI differs from other methodologies

The air quality metrics in Delhi have come under scrutiny due to contrasting AQI figures. The Central Pollution Control Board reported figures under 400 during Diwali, while numerous apps indicated alarming levels of 1,500 to 1,800. This disparity arises from the CPCB's 24-hour average calculations, whereas many apps rely on shorter durations and private sensors that employ varied methodologi