Photo by Wietse Jongsma on Unsplash
🌫️ Current Fog Crisis Unfolding Across Northern India
As of January 13, 2026, a thick blanket of dense fog has enveloped much of Northern India, plunging visibility to near zero in key areas like Delhi, Punjab, Haryana, Uttar Pradesh, and beyond. This annual winter phenomenon, intensified this year by a combination of stagnant cold air and high pollution levels, is wreaking havoc on daily commutes, transportation networks, and economic activities. Satellite imagery from NASA captured on recent days shows the fog stretching from the Indo-Gangetic plains to parts of the Ganges Delta, creating a vast white shroud visible even from space.
Residents in Delhi's National Capital Region (NCR) woke up to visibility dropping below 50 meters at major airports like Indira Gandhi International (IGI), with Palam reporting nil visibility early morning. Similar conditions prevail in Amritsar, Lucknow, Varanasi, and Prayagraj, where fog has persisted through the night and into midday. The India Meteorological Department (IMD) has issued alerts for dense to very dense fog across northwest, central, and eastern India, expected to linger for the next five to seven days.
This fog season marks one of the most severe in recent years, with reports indicating over 100 flights delayed or diverted at Delhi airport alone on January 11 and 12. Train services, including high-speed Vande Bharat expresses, face cancellations and hours-long delays, stranding thousands of passengers. Road travel is equally perilous, with highways like the Delhi-Agra Yamuna Expressway seeing multiple pile-ups due to sudden visibility drops.
Root Causes Behind the Persistent Dense Fog
Dense fog in Northern India forms when cool, moist air near the ground cools further under clear winter skies, leading to water vapor condensation into tiny droplets suspended in the air. This process, known as radiative cooling, is exacerbated by the region's flat topography and inversion layers—warm air trapping cooler, moist air below. But this year, scientific research points to aerosol pollution as a key aggravator.
A groundbreaking study published in Science Advances reveals that heavy concentrations of pollutants from vehicles, industries, and crop burning act as cloud condensation nuclei, thickening fog layers especially at night. Phys.org reports that these aerosols invigorate fog formation, turning shallow mist into impenetrable blankets. In Delhi, where Air Quality Index (AQI) levels hover around 'very poor' at 350-400, particulate matter (PM2.5) plays a starring role in prolonging these events.
Winter crop residue burning in neighboring states like Punjab and Haryana adds to the mix, releasing black carbon and organic aerosols that absorb sunlight during the day but enhance cooling at night. The IMD's fog forecast for Delhi, updated daily, confirms these conditions will persist, with no significant wind to disperse the haze until late January.
🚅 Massive Disruptions to Air, Rail, and Road Travel
Transportation networks are the hardest hit, with ripple effects cascading across the world's most populous region.
Flight Chaos at Major Airports
Delhi's IGI Airport, India's busiest, has seen over 200 flights delayed on peak days, with airlines like Air India, IndiGo, and SpiceJet issuing advisories. Visibility below 100 meters triggers low-visibility operations, but nil conditions force diversions to Jaipur or Lucknow. Business Standard noted on January 11 that cold wave conditions compounded the fog, leading to hazardous air quality and compounded travel woes.
Other hubs like Amritsar and Lucknow report similar issues, stranding international passengers en route to Europe or the Middle East.
Train Delays Paralyzing Rail Networks
Indian Railways, the lifeline for millions, operates under severe constraints. Vande Bharat services between Delhi and Lucknow have been partially cancelled, while over 100 trains run late by 4-12 hours. Fog safety devices (FSDs) on locomotives help, but dense fog exceeding 500 meters visibility halts operations. Goodreturns.in highlighted recent cancellations, advising passengers to check the NTES app for real-time updates.
- Key affected routes: Delhi-Howrah, Delhi-Mumbai, Golden Triangle circuits.
- Refunds issued for cancellations, but rescheduling remains challenging.
- Helpline numbers overwhelmed with inquiries.
Road Travel Nightmares and Accidents
National highways witness chaos, with low visibility causing chain-reaction crashes. The Delhi-Noida highway saw a 20-vehicle pile-up last week, underscoring the dangers. Authorities recommend hazard lights and reduced speeds, but enforcement is tough amid the haze.
Economic and Daily Life Ripples
Beyond transport, the fog inflicts broader damage. Daily wage laborers in construction and logistics lose income, while e-commerce deliveries grind to a halt. The aviation sector alone faces millions in losses daily from delays, as per industry estimates. In agriculture, fog delays harvesting in Punjab's wheat fields, risking crop quality.
Urban dwellers in Delhi NCR endure longer commutes, school delays, and health issues from polluted air penetrating indoors. Hospitals report spikes in respiratory cases, particularly among children and the elderly. Economically, Vajiram & Ravi analysis points to recurring winter losses in billions, prompting calls for better infrastructure like more CAT-III runways at airports.
For students and academics, disruptions hit hard—exams postponed, conferences cancelled. Those commuting to universities in Delhi or Lucknow face unreliable transport, impacting attendance and research timelines. Exploring higher education jobs in less fog-prone regions might offer stability during such seasons.
🧪 Scientific and Environmental Perspectives
Recent research underscores human influence on fog intensity. A NASA Earthdata image from December 2025 foreshadowed this season's severity, while a Times of India article on aerosol studies from Dehradun confirms pollution's role in fog invigoration. The Science Advances paper details microphysical processes where aerosols couple thermodynamics, leading to thicker fog.
Long-term, climate change may alter patterns—warmer days but colder nights could prolong events. Mitigation requires curbing stubble burning via machinery subsidies and stricter emission norms.
📋 Official Responses and Management Strategies
Indian Railways deploys fog pilots—extra staff on locomotives with advanced visibility aids. Airlines ramp up communication via apps, offering waivers. IMD's real-time bulletins, like the Delhi fog forecast, guide decisions.
Governments activate fog lamps on highways and drone patrols for traffic. Vajiram & Ravi outlines protocols: Railways use GPS-based systems, aviation leans on RNAV procedures.
- Passenger advisories: Travel light, carry IDs.
- Tech upgrades: More low-level wind shear alerts.
- Coordination: IRCTC-NTES integration for trains.
🛡️ Essential Safety Tips for Navigating the Fog
Stay safe with these actionable steps:
- Use fog lights, not high beams; maintain 50m distance.
- Monitor IMD app and NTES for updates.
- Avoid night travel; opt for trains with FSD.
- Wear masks outdoors; hydrate to combat dry air.
- For flyers: Check airline apps pre-flight.
Parents should keep children indoors during peak fog (midnight-10am). Academics traveling for lectures can prepare backups via higher ed career advice resources.
🔮 Forecast: When Will Relief Arrive?
IMD predicts gradual improvement post-January 15, with westerly winds dispersing fog. However, cold waves may return, sustaining low visibility. X posts from meteorologists like Navdeep Dahiya echo this, noting massive fog patches covering Uttar Pradesh to Bihar.
Long-range models suggest a wetter February could break the pattern. Travelers to universities or job interviews should plan buffers, perhaps exploring university jobs with flexible remote options.
Wrapping Up: Navigating Northern India's Fog Season
This dense fog episode highlights vulnerabilities in India's transport and pollution management. While challenging, it spurs innovations like AI-driven fog prediction. Stay informed, safe, and consider sharing your experiences on Rate My Professor if affected during academic travels. For career moves amid disruptions, check higher ed jobs or higher ed career advice. AcademicJobs.com keeps you updated on such impacts—post a job to connect with resilient talent.
