Visibility in Delhi improved marginally on Sunday, with the maximum temperature settling at 15.9 degrees Celsius, five notches below the season’s average, according to the IMD. The minimum temperature was recorded at 11.7 degrees Celsius, five notches above normal, according to the weather department. Due to poor visibility in other states and Delhi, the Indian Railways on Sunday morning had issued a list of 23 Delhi-bound trains running late due to foggy conditions. The 24-hour average Air Quality Index (AQI) was recorded at 382 at 4 pm. According to the IMD, humidity level was recorded at 84 per cent at 5.30 pm. An AQI between zero and 50 is considered ‘good’, 51 and 100 ‘satisfactory’, 101 and 200 ‘moderate’, 201 and 300 ‘poor’, 301 and 400 ‘very poor, and 401 and 500 ‘severe’.
