A thick blanket of dense fog covered large parts of north India on December 20, sharply reducing visibility in Delhi, Punjab, and Uttar Pradesh. The India Meteorological Department (IMD) has issued red and orange alerts, warning of severe disruptions to road, rail, and air travel amid cold-wave conditions.
North India woke up to a foggy morning as visibility plunged to near-zero levels in several regions. The IMD has issued a red alert for Uttar Pradesh and Haryana, predicting dense to very dense fog, while Delhi remains under an orange alert. Punjab, Madhya Pradesh, Bihar, and Chhattisgarh have also been placed under orange warnings. The cold wave has tightened its grip, with temperatures dipping and air quality worsening in the National Capital Region. Authorities have advised caution for travelers, as flight schedules and train services face delays.
Key highlights
* Red alert issued for Uttar Pradesh and Haryana; orange alert for Delhi, Punjab, Bihar, and Madhya Pradesh
* Visibility in Delhi dropped to 0.5 km, disrupting traffic and flights
* Cold-wave conditions expected to persist through December 21–22
* IMD forecasts dense fog in isolated pockets until December 25 in some states
* AQI in Delhi remains in “very poor” category, compounding health risks
Impact
The dense fog and cold wave highlight the seasonal challenges of winter in north India, with authorities urging caution for commuters and travelers. The prolonged fog spell is expected to continue, affecting daily life and transport networks.
Sources: Hindustan Times, CNBC TV18, Livemint, Business Standard