NEW DELHI: On Wednesday which is a Diwali morning, Delhi's air quality improved to 'unhealthy' at a number of places as winds continued to blow across the region.  On the whole air quality index remained in poor category at 278 on today.

Authorities are at present revitalizing for the morning after Diwali. Delhi's air quality is likely to deteriorate to 'severe plus emergency' category on Thursday, the Centre-run System of Air Quality Forecasting and Research (SAFAR) announced.

Concerning about pollution Central Pollution Control Board's recommendation, the Environment Pollution (Prevention and Control) Authority banned the entry of trucks into the city between November 8-10 but  trucks carrying essential commodities will be exempt from the ban, the EPCA stated in the directive issued to the Chief Secretaries of Uttar Pradesh, Punjab, Haryana, Rajasthan and Delhi.

Meanwhile, Delhi Environment Minister Imran Hussain asked for citizens to have fun a cracker-free Diwali.

Worth mention here on Monday, the national capital recorded its worst air quality of the season with pollution levels eight times the permissible limit as a thick fog engulfed the city.

CPCB has also suggestion for a strict vigil on waste dumping and burning, intensification of efforts by traffic police to tackle traffic congestion, continuation of measures proposed by the task force, like ban on construction activities and shutting down coal and biomass based industries. It also urged to people to avoid the use of diesel private cars.