Delhi: Pollution levels likely to drop due to wind, air quality remains 'very poor'
India | Nov 05, 2019, 11:21 AM ISTAn AQI between 0-50 is considered 'good', 51-100 'satisfactory', 101-200 'moderate', 201-300 'poor', 301-400 'very poor' and 401-500 'severe'. An AQI above 500 falls in the 'severe plus' category.