Delhi is under the grip of severe cold conditions as the mercury dipped to 3.5 degrees Celsius, marking the lowest temperature this winter. The India Meteorological Department (IMD) has issued an orange alert for a cold wave, effective today and tomorrow. Dense fog has enveloped various parts of the city, impacting visibility. The situation prompted the Delhi airport to release an advisory for travelers, urging them to check with airlines due to potential flight disruptions caused by the dense fog.

For the past three days, the minimum temperature in Delhi has ranged between 3 to 4 degrees Celsius. Flight operations at Delhi Airport may be affected due to the dense fog, causing delays and disruptions. Passengers are advised to contact their respective airlines for updated flight information.

The overall Air Quality Index (AQI) in Delhi stood at 398, categorized as 'very poor.' The Central Pollution Control Board (CPCB) data revealed deteriorating air quality. The Delhi Education Department has allowed the reopening of schools for physical learning starting January 15, with operations restricted between 9 am and 5 pm.

The Indian Railways reported delays of one to six hours for 22 Delhi-bound trains due to prevailing fog conditions. The situation is expected to persist, with the weather department forecasting mainly clear skies with dense to very dense fog in the morning hours, along with continued cold wave conditions.

The deteriorating air quality has led to the reimposition of restrictions as per Stage III of the Graded Response Action Plan (GRAP) in the National Capital Region (NCR). This includes a ban on construction work and specific categories of vehicles. Despite the challenges, authorities are working to manage the situation and minimize inconvenience to the public.