UP News: In a significant incident on the Delhi-Lucknow highway, two individuals sustained injuries following a multi-vehicle collision attributed to dense fog conditions in Hapur, Uttar Pradesh, early Friday morning. According to reports, the crash occurred around 5:30 AM near Bahadurgarh station in Singrauli, Hapur.Fog Causes Traffic DisruptionsThe India Meteorological Department (IMD) reported that the temperature in Delhi fell to a chilly 9.6 degrees Celsius on the same morning. The capital experienced heavy fog, with visibility dropping to nearly zero in several areas, leading to substantial disruptions at the airport.#WATCH | Hapur, UP: Several vehicles collide due to dense fog on the Delhi-Lucknow Highway near the Bahadurgarh station area.Source: Hapur Police pic.twitter.com/kNWKvTCTZD— ANI (@ANI) January 10, 2025The IMD issued an orange alert for Delhi, indicating a high level of caution due to the forecast of dense to very dense fog that could impact various transportation routes including airports and railways.Impact on Air TravelAirport authorities took to social media platform X to inform passengers that flight operations were being affected by the thick fog. They cautioned that flights lacking CAT III navigation systems—essential for landing in low visibility—might face significant challenges.IndiGo, the countrys largest airline, announced via social media that dense fog was impacting both departures and arrivals at Delhi Airport and warned that some flights might be canceled as conditions worsened throughout the day.Ongoing Air Quality ConcernsThe adverse weather conditions come as Delhi continues to grapple with severe air quality issues, having ranked as the second most polluted capital globally according to live rankings by Swiss organization IQAir. The city has been battling smog since winter began, exacerbating health concerns among its residents.In summary, the combination of low temperatures and dense fog has led to dangerous driving conditions on highways and significant disruptions in air travel across Delhi and its surrounding areas.