Delhi's air quality deteriorates, AQI 'very poor' for fifth day in row
November 02, 2023 9:04 ISTDelhi AQI: 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".