New Delhi: Delhi's air quality was recorded in the 'very poor' category on Sunday morning, with an Air Quality Index of 350, according to the Sameer app. Of the 54 monitoring stations, 47 recorded 'very poor' air quality, while seven were in the 'severe' category. IIT Delhi recorded the highest Air Quality Index (AQI) at 428, followed by ITO at 414.Delhi recorded a minimum temperature of 18.