New Delhi: The severe air pollution causing health emergency in Delhi that has grabbed international headlines, may dissipate by Sunday as favourable weather conditions are forecast that may cause a slow recovery in its air quality index (AQI). The toxic haze covering Delhi's skies is that for three weeks stagnant conditions caused by the delayed withdrawal of the monsoon had caused a deterioration due to accumulation of pollutants. This impact is ending now, according to Safar India (System of Air Quality and Weather Forecasting And Research), under the Ministry of Earth Sciences and Indian Institute of Tropical Meteorology, Pune.

While AQI in Delhi is in the severe plus category, the highest grade of computation at 435, the US Embassy was denoting a sharp improvement in PM 2.5 levels compared to the peak values on Friday of 454. On Saturday, the PM 2.5 count at 9 am had halved at 208, according to US Embassy data.