Summary:
NEW DELHI: Delhi choked on toxic air for the second day as the air quality on Tuesday continued to remain in the 'severe' category, owing to unfavourable meteorological conditions. "Current meteorological conditions -- fall in temperature and high moisture -- in Delhi are such that it could have led to rainfall but insufficient rain often helps in deteriorating the air quality. Across NCR, it was 263 and 454 units, respectively. "Western disturbance over the northern part of India is active. Calm surface winds are also not allowing pollutants to disperse," System of Air Quality and Weather Forecasting and Research (SAFAR) said.However, it said, the air quality in Delhi may recover slightly to 'very poor' by Wednesday evening.The agency had on Monday said that only sufficient amounts of rainfall might bring down pollution levels in Delhi-NCR but if it is inadequate, the air quality might deteriorate.The Air Quality Index (AQI) of Delhi at 5 pm was 413 against 403 on Monday, both in the 'severe' category on a scale of 0 to 500..