Delhi's air quality improved to the 'very poor' category on Thursday after eight days of 'severe' pollution, with the overall AQI recorded at 379 at 7 am. However, several areas, including Jahangirpuri, Wazirpur, Mundka, and Ashok Vihar among others, reported readings above 400, remaining in the "severe" category. Wazirpur recorded the highest reading at 437, followed by Bawana at 419.