Dense fog and sharply reduced visibility led to multiple vehicle collisions on the Delhi-Mumbai Expressway in Haryana’s Nuh district on Monday, leaving two people dead and several others injured.
The accident
was reported as large parts of north India grappled with hazardous weather conditions marked by thick fog and severe air pollution.
Several vehicles were involved in collisions at different points along the stretch, triggering traffic disruption and chaos on the high-speed corridor.
Emergency response teams rushed to the spot, and the injured were taken to nearby hospitals for treatment.
VIDEO | Nuh, Haryana: Dense fog on the Delhi–Mumbai Expressway leads to multiple vehicle collisions, leaving two people dead and several others injured as visibility dropped sharply.#Nuh #DenseFog #RoadAccident
(Full video available on PTI Videos – https://t.co/n147TvrpG7) pic.twitter.com/XJLMvJ08jv
— Press Trust of India (@PTI_News) December 15, 2025
Widespread other fog-related disruptions were also reported across the National Capital Region and neighbouring areas, as weather conditions deteriorated significantly.
The foggy conditions coincided with severe air pollution in Delhi, where the city remained shrouded in a thick blanket of smog.
The Air Quality Index (AQI) on Monday settled at 498, placing it in the higher spectrum of the ‘severe’ category, according to data released by the Central Pollution Control Board (CPCB).
Air quality was recorded as ‘severe’ at 38 monitoring stations across the capital, while it was ‘very poor’ at two stations. Jahangirpuri recorded the worst air quality among the 40 stations monitored, with an AQI of 498.
On Sunday, the AQI had climbed to 461, marking Delhi’s most polluted day this winter and the second-worst December air quality day on record.
The CPCB classifies AQI levels between 401 and 500 as ‘severe’.
According to officials, weak winds and low temperatures have contributed to pollutants remaining trapped close to the surface, worsening both air quality and visibility.
Dense fog also severely impacted air travel, with over 60 flights cancelled and five diverted at Delhi airport on Monday due to poor visibility, according to news agency PTI.
More than 250 flights were delayed, adding to passenger inconvenience.
Delhi International Airport Ltd (DIAL) said flight operations continued to be impacted and that its on-ground teams were working with stakeholders to assist passengers across terminals.
Meanwhile, traffic authorities in the region last week issued advisories to mitigate the risk of accidents during foggy conditions.
The Gautam Buddha Nagar Traffic Police have reduced speed limits on major roads and expressways, including the Yamuna Expressway and the Noida-Greater Noida Expressway, for the winter period, appealing to motorists to strictly adhere to the revised limits in the interest of road safety.
