Pollution in New Delhi on Monday morning fell to "very poor" after being "poor" as the air quality index (AQI) slipped to 346 at 7:00 am, according to System of Air Quality and Weather Forecasting And Research (SAFAR).
The AQI in adjoining areas of Noida, Gurgaon was registered at 315 and 355 respectively.
An AQI between 201 and 300 is 'poor', 301-400 'very poor' and 401-500 'severe'.
An AQI between 0-50 is considered good, 51-100 satisfactory, 101-200 moderate, 201-300 poor, 301-400 very poor, and 401-500 severe. Above 500 is severe-plus emergency category.
Air quality in the city improved from "very poor" to