Delhi’s air quality improves from ‘severe’ to ‘very poor’ due to wind
Hindustan TimesThe residents of Delhi woke up to a significantly better morning on Saturday as the average Air Quality Index reduced to 339 at 9am, the lower half of ‘very poor’ category, thanks to a change in the wind direction from north-westerly to easterly and a marginal increase in wind speed. People shop for the 'Chhath Puja' celebrations at Azadpur Mandi in New Delhi on Saturday The 24-hour average AQI on Friday evening was 405, still in the severe category. Data as per Delhi government’s real-time source apportionment on Friday showed vehicles were contributing by 44% to Delhi’s PM 2.5, followed by 22% from biomass burning. The impact of stubble burning is expected to reduce over Delhi in the next three days now, firstly due to the change in wind direction, as well as a gradual drop in farm fire numbers.