Delhiites on Monday woke up to a thick blanket of hazy dust with the air remaining toxic two days ahead of Diwali and the weather office warning of worse air quality days ahead. An official of the central pollution control agency said the city’s air quality could be relatively better this Diwali due to Supreme Court order allowing the sale and use of only “green” and “low emission” firecrackers in the NCR. The weather office has warned of a dip in air quality in the coming days with the northwesterly winds likely to bring pollutants in Delhi’s air from farm fires.