Delhi records coldest night of October so far as AQI set to worsen. Delhi recorded lowest minimum temperature of October so far, with Safdarjung registering 17.1 degrees Celsius, 1.3 degrees below normal. Average AQI stood at 139, in moderate category, but forecasts warned of poor air quality from October 21. Pusa recorded worst reading at 281. Satellite data detected 98 stubble-burning incidents across 6 states, taking total recorded since September 15 to 1,171.