Toxic air continues to choke Delhi, air quality may deteriorate further

Twenty areas in the national capital recorded 'very poor' air quality while it was 'poor' in six areas, it said

Delhi's air quality continued to remain in the 'very poor' category on Friday due to unfavourable meteorological conditions that slowed down dispersion of pollutants even as authorities forecast "significant deterioration" in pollution levels over the weekend.

The overall air quality index (AQI) of Delhi was recorded at 353, according to System of Air Quality and Weather Forecasting (SAFAR).

An AQI between 0 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'.

The CPCB said seven areas in Delhi -- Ashok Vihar, Anand