NEW DELHI: Delhi’s Indira Gandhi Worldwide Airport issued an advisory on Saturday amid heavy smog and low visibility circumstances throughout the capital.The airport assured the flight operations to be regular as ‘Low Visibility Procedures’ had been in progress, and urged the passengers to remain up to date with their respective flight schedules. “Low Visibility Procedures are in progress at Delhi Airport. All flight operations are presently regular. Passengers are requested to contact the airline involved for up to date flight info,” learn the advisory.The advisory got here as air high quality in Delhi deteriorated sharply, with the general Air High quality Index recorded at 393 on Saturday morning, inserting it within the ‘very poor’ class. A number of areas of town had been blanketed in dense smog, considerably decreasing visibility.Whereas some areas recorded ‘extreme’ air high quality ranges, others remained within the ‘very poor’ vary.Officers blamed low wind speeds for trapping pollution close to the bottom, whereas weak western disturbances are unlikely to deliver instant reduction.Based on the India Meteorological Division, average fog is anticipated to persist, additional worsening air high quality. Authorities have urged residents to restrict outside publicity and observe well being advisories as Delhi braces for one more difficult winter smog episode.