Video and photos from Delhi and nearby cities showed a blanket of fog covering roads and farms and obscuring buildings.

The Delhi airport has issued an advisory warning passengers of possible disruptions due to low visibility.

“While landings and take offs continue at Delhi airport, flights that are not CAT III compliant may get affected,” the advisory , externalread. CAT III is a system which allows planes to land during conditions of poor visibility.

According to flight tracking website flightradar24, departures at Delhi airport were delayed by more than 30 minutes and arrivals by almost 20 minutes.

Several passengers took to social media to complain of chaos at the airport.

“No display of boarding gate and it seems no one knows the exact status,” a user wrote on X (formerly twitter).

Meanwhile 26 trains to the city are running late due to fog, the Indian Railways said.

India’s weather department has predicted light showers over the weekend, which are expected to improve visibility conditions.

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