Delhi once again woke up to hazy skies and heavy air on Tuesday, as pollution levels across the city stayed firmly in the poor category. A thick layer of smog covered large parts of the national capital, reducing visibility and raising health concerns, especially for vulnerable groups.
According to official data, the city’s air quality showed little improvement, continuing a familiar winter pattern that residents have come to dread each year.
Delhi’s Air Quality Remains in the Poor Category
The overall Air Quality Index for Delhi stood at 288 on Tuesday, placing it in the poor category. This data was released by the Central Pollution Control Board through its SAMEER air quality monitoring platform.
An AQI in this range indicates air that can cause breathing discomfort for most people on prolonged exposure and serious health risks for children, elderly citizens, and those with existing respiratory or heart conditions.
While the city has seen worse pollution days in the past, the current situation remains worrying, particularly because winter has just begun.
Smog Reduces Visibility Across the City
A visible blanket of smog covered many parts of Delhi, making the skyline appear dull and grey. Residents reported reduced visibility on roads, while morning walkers and commuters experienced irritation in the eyes and throat.
The smog was particularly noticeable near key transport hubs, including the Indira Gandhi International Airport, where visibility dropped due to suspended pollutants lingering in the air.
The presence of smog not only affects daily movement but also contributes to a sense of fatigue and discomfort among residents who spend long hours outdoors.
Flight Operations Continue at Delhi Airport
Despite the smoggy conditions, Delhi Airport confirmed that flight operations were continuing. The airport is currently operating under CAT III conditions, which allow aircraft to land and take off even in low-visibility situations.
In a public update, airport authorities said that both arrivals and departures were taking place, though passengers should be prepared for possible delays or disruptions. Travelers were advised to check directly with their airlines for the most accurate and up-to-date flight information.
Interestingly, air quality readings in and around the airport area were slightly better compared to other parts of the city. The AQI near the airport stood at 180, placing it in the moderate category.
Pollution Levels Vary Across Delhi
While the overall AQI remained poor, pollution levels differed across locations in the city.
At ITO, one of Delhi’s busiest traffic corridors, the AQI was recorded at 281, also falling in the poor category. Other densely populated and high-traffic areas showed similar readings, reflecting the combined impact of vehicle emissions, construction dust, and stagnant atmospheric conditions.
Experts note that even areas showing moderate air quality are not entirely safe, especially when exposure lasts for several hours.
Why Pollution Worsens During Winter
Low Wind Speed Traps Pollutants
One of the main reasons for the poor air quality is the onset of winter. During this season, wind speeds are usually low, which prevents pollutants from dispersing. As a result, harmful particles remain suspended close to the ground.
Without strong winds to carry pollutants away, emissions from vehicles, industries, and nearby regions continue to build up over the city.
Temperature Inversion Plays a Role
Winter also brings a phenomenon known as temperature inversion. Under normal conditions, warm air near the ground rises, carrying pollutants upward. In winter, cooler air gets trapped near the surface under a layer of warmer air, preventing pollutants from dispersing.
This leads to a steady increase in pollution levels, especially during early morning and late evening hours.
Health Risks Increase for Vulnerable Groups
Doctors and health experts have repeatedly warned that poor air quality poses serious risks, particularly for children, senior citizens, pregnant women, and people with asthma or other respiratory illnesses.
Prolonged exposure to polluted air can cause symptoms such as coughing, breathlessness, chest tightness, headaches, and eye irritation. In severe cases, it can worsen chronic lung and heart diseases.
Hospitals in Delhi often report a rise in respiratory-related complaints during winter, coinciding with periods of sustained poor air quality.
Residents Feel the Impact in Daily Life
For many Delhi residents, the return of smog brings a sense of frustration and helplessness. Morning jogs are cut short, outdoor playtime for children is restricted, and face masks make a return to daily routines.
Office-goers commuting long distances complain of fatigue and discomfort, while parents worry about sending their children to school when pollution levels remain high.
The situation also affects tourism and outdoor businesses, as visitors avoid sightseeing during heavy smog days.
Delhi’s Pollution Problem Is Not Unique
While Delhi often draws national attention for its air quality, experts point out that many Indian cities are facing similar or even worse pollution levels.
Smaller cities and industrial hubs frequently record high AQI readings but receive far less attention. The difference is that Delhi’s pollution is more visible due to its size, population density, and political significance.
This broader picture highlights the need for long-term, nationwide solutions rather than seasonal emergency measures.
What Authorities Are Doing
Authorities closely monitor air quality data and issue advisories when pollution levels worsen. Measures such as restricting construction activity, controlling dust, and limiting vehicle movement are often considered during severe pollution episodes.
However, experts argue that short-term actions alone cannot solve the problem. Sustainable solutions require better public transport, cleaner fuels, stricter industrial regulations, and regional coordination with neighbouring states.
What Citizens Can Do to Protect Themselves
While large-scale solutions depend on policy and enforcement, individuals can take certain steps to reduce health risks during poor air quality days.
Limiting outdoor activities, especially during early mornings and late evenings, can help reduce exposure. Wearing masks designed to filter fine particles and keeping indoor spaces well-ventilated but protected from outdoor pollution can also make a difference.
Doctors advise staying hydrated, eating a balanced diet rich in antioxidants, and seeking medical help if symptoms persist.
A Familiar Winter Pattern Returns
As Delhi moves deeper into winter, residents fear that pollution levels could worsen further unless weather conditions improve or strong measures are implemented.
For now, the city remains under a blanket of smog, with air quality stuck in the poor category and little immediate relief in sight. Until winds pick up or sustained action is taken, Delhi’s winter air continues to test the resilience and health of its people.
