India, Nov. 11 -- Delhi's air quality improved marginally on Tuesday, with the 24-hour average AQI dropping to 299 in the "poor" category from Monday's 344 (very poor), according to the Central Pollution Control Board's bulletin.

Weather experts attributed the improvement to stronger northwesterly winds that helped disperse pollutants, and noted that the trend could continue over the next couple of days.

The Air Quality Early Warning System (EWS) for Delhi also forecast a decline in PM2.5 and PM10 concentrations over the next two days.

According to the Centre's Decision Support System (DSS), the transport sector was the largest contributor to Delhi's pollution on Tuesday, accounting for 18% of the total. The contribution of stubble bur...