Delhi air quality: Capital city slips back into hazardous category, re-enters 'severe' zone with Saturday AQI at 420

Delhi experienced severe air quality on Saturday morning. The Air Quality Index (AQI) reached 420. Nine monitoring stations reported AQI levels exceeding 450, categorised as 'severe plus'. The minimum temperature was 11.4 degrees Celsius. The city's air quality has been poor for over 20 days, fluctuating between 'very poor' and 'severe' categories.