Dense Fog Blankets New Delhi, Disrupting Transport and Raising Health Concerns

Winter weather conditions impact flights, trains, and road safety as authorities issue advisories across the capital

Dateline: New Delhi | January 6, 2026

Summary: A spell of dense fog has enveloped New Delhi and surrounding regions, leading to widespread transport disruptions and renewed concerns over public health and road safety. Authorities are urging caution as winter conditions intensify across North India.


Capital Wakes Up to a Grey Morning

Residents of New Delhi awoke to a thick blanket of fog that reduced visibility across the city, marking one of the season’s most disruptive winter mornings. From arterial roads to residential neighbourhoods, visibility levels dropped sharply, affecting daily routines and bringing traffic movement to a crawl.

The fog, which settled in during the late night hours, persisted well into the morning, prompting authorities to activate standard winter protocols for transport and public safety.

Flights and Trains Face Significant Delays

Air travel was among the hardest hit sectors as low visibility conditions led to delays and rescheduling of several domestic flights. Airport officials implemented low-visibility procedures, prioritising safety while attempting to minimise passenger inconvenience.

Rail services were similarly affected, with multiple long-distance trains arriving late into the capital. Passengers at major railway stations reported extended waiting times, as fog slowed train movement across large parts of northern India.

Road Safety Under Strain

On the roads, the fog created hazardous driving conditions, particularly during early morning hours. Reduced visibility, combined with moisture on road surfaces, increased the risk of accidents. Traffic police intensified patrols at key junctions and urged motorists to use fog lights and maintain safe distances.

Despite advisories, several minor collisions were reported, underscoring the challenges of navigating urban traffic during peak winter fog episodes.

Health Implications for Vulnerable Groups

Beyond transport disruptions, health experts warned that prolonged exposure to cold and polluted air during foggy conditions could exacerbate respiratory ailments. Elderly residents, children, and individuals with pre-existing conditions were advised to limit outdoor activity.

Doctors noted an uptick in complaints related to breathing difficulties, throat irritation, and eye discomfort, symptoms often associated with a combination of fog and urban air pollution.

The Science Behind the Fog

Meteorologists explain that winter fog in the capital is driven by a mix of low temperatures, high humidity, and calm wind conditions. These factors allow moisture to condense near the ground, creating dense fog layers that can linger for hours.

The phenomenon is often intensified in urban areas due to pollution particles that act as condensation nuclei, thickening the fog and reducing visibility further.

Air Quality Concerns Resurface

The fog episode has once again drawn attention to New Delhi’s air quality challenges. While fog itself is a natural occurrence, its interaction with pollutants can trap harmful particles close to the ground.

Environmental observers caution that such conditions may temporarily elevate pollution exposure levels, even if official air quality indices show only marginal changes.

Authorities Issue Advisories

City authorities issued advisories urging residents to remain cautious while commuting and to follow health guidelines. Schools reviewed schedules to ensure student safety, while employers were encouraged to offer flexible reporting times where possible.

Transport departments coordinated with traffic police and emergency services to manage congestion and respond swiftly to incidents.

Economic and Social Impact

While fog-related disruptions are seasonal, their cumulative impact on productivity and daily life is significant. Delayed commutes translate into lost work hours, while transport delays affect logistics and service delivery.

Small businesses dependent on early morning footfall reported slower starts to the day, reflecting how weather patterns can ripple through the urban economy.

Urban Planning and Resilience

Experts argue that recurring winter disruptions highlight the need for improved urban resilience planning. Enhanced public transport reliability, better road lighting, and real-time information systems could mitigate some of the challenges posed by fog.

Investments in cleaner mobility and emission reduction are also seen as long-term measures that could lessen the severity of fog-pollution interactions.

Public Awareness and Preparedness

Authorities emphasised the importance of public awareness in managing winter weather risks. Simple precautions—such as avoiding high-speed driving, wearing warm clothing, and staying informed through official updates—can significantly reduce harm.

Community-level preparedness, including coordination among schools, offices, and transport operators, is increasingly viewed as essential during peak winter months.

What the Coming Days May Hold

Weather officials indicated that foggy conditions could recur over the next few days, particularly during early mornings and late nights. Gradual improvement in visibility is expected as daytime temperatures rise, though fluctuations are likely.

Residents are advised to stay alert and adaptable, recognising that winter weather patterns can shift rapidly.

Conclusion

The dense fog over New Delhi serves as a reminder of the city’s vulnerability to seasonal weather extremes. As climate variability and urban pressures intersect, managing such disruptions will require coordinated action, informed citizens, and sustained policy attention.

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