Children's Day 2026: Why kids inhale more toxic air than adults and warning signs parents must watch for

Children's Day 2026: Children’s Day arrives across India on November 14, celebrations in major urban centres are overshadowed by a deepening environmental crisis. Toxic smog and hazardous air quality have transformed everyday childhood routines—from commuting to school to playing in neighbourhood parks, into silent health risks, raising urgent questions about what breathing polluted air means for the next generation.

Medical specialists share insights into how toxic urban air impacts developing lungs, the subtle warning signs parents must watch for, and the immediate measures required to safeguard children’s respiratory health.

An invisible crisis in growing cities

Dr Subho Sarkar, Consultant, Pulmonary and Sleep Medicine, Sir H. N. Reliance Foundation Hospital, says, "Every child deserves the basic right to breathe clean air, just as much as they deserve good education, healthcare, and a safe neighbourhood to grow up in. Yet, even as we celebrate Children’s Day, an invisible crisis is quietly compromising the health and future of millions of children across our cities. In fast-growing urban centres, air pollution isn't just an environmental headline; it is a daily health emergency in our homes and schoolyards. Children take the hardest hit because their bodies are still growing. Their lungs are still developing, their immune systems aren't fully built up yet, and relative to their body weight, they breathe in more air than adults do."

Dr Shehla Kazi, Consultant Paediatrics & Neonatology, Jaslok Hospital and Research Centre, Mumbai, says, "Children's Day is a reminder that every child deserves a healthy environment to grow, breathe and thrive. However, for children living in increasingly polluted cities, clean air is becoming a luxury rather than a basic necessity. As a pediatrician, I find this particularly concerning because children are among the most vulnerable victims of air pollution. Children breathe faster than adults, inhale more air relative to their body weight and have developing lungs and immune systems. Exposure to pollutants such as PM2.5, PM10, nitrogen dioxide and ozone can irritate the respiratory tract, trigger inflammation and compromise normal lung development."

Dr Kanchankumar Bhagyawant, Consultant Paediatrician and Neonatologist at Ruby Hall Clinic, Pune, says, "In cities like Delhi and Mumbai, where air's heavily polluted, children are breathing toxic air every single day. It is no longer just an issue. It is a part of life. Many children travel to school during rush hour. They play outside near roads. They spend hours outside inhaling particles in the air. One of the dangers of these particles is PM2.5. These particles are so small they can go into the lungs. The problem is not about short-term irritation like coughing or a sore throat. The bigger worry is long-term damage. Repeated exposure to air during childhood can stop the lungs from growing the way they should."

Dr Meena J, Senior Consultant, Paediatrics and Neonatology, Aakash Healthcare, says, "As Children's Day is observed on November 14 in India, rising levels of pollution, especially in cities, have raised eyebrows about the health of kids' lungs. If exposed as a child to air pollution (levels) that are often unhealthy or hazardous, it can be a cause for serious concern regarding their lung development as well as respiratory function and even overall health. Children are particularly susceptible to air pollution because their lungs and immune systems are still developing. Children also breathe more rapidly than adults, meaning they inhale more air in relation to body weight. Air pollutants and irritants such as PM2.5, PM10, nitrogen dioxide and ground-level ozone can cause airway irritations and inflame children's airways, predisposing them to respiratory problems."

Immediate symptoms and lifelong lung impact

Dr Bhagyawant adds, "Children are more at risk than adults. Their lungs are still growing. They breathe faster than adults for their body weight. They also spend time playing outside. This means they take in air and more pollutants. Pollutants like nitrogen dioxide and fine particles can irritate the airways. They can cause inflammation. They can make asthma worse. A child who coughs after playing who wheezes when running or who wakes up with a stuffy nose may be showing signs that the air is harming them. The real danger is that a child might look healthy on the outside but not be growing properly on the inside. Lung development goes on until adolescence. If a child is exposed to air for years their lungs may not reach their full potential. Studies have shown that long-term exposure to PM2.5 and nitrogen dioxide slows lung function growth. This means the child may never have the lung capacity they should.. Once that damage is done it is hard to fix."

Dr Sarkar adds, "With the additional time they spend outside playing or traveling to school, their exposure to the harmful gases is greatly increased. Microscopic particles such as PM2.5, nitrogen dioxide, and ozone easily get past the natural defenses and lodge themselves deep within their lungs. This leads to chronic inflammation of the respiratory tract tissue. The fallout from breathing hazardous air doesn't simply disappear as children grow up. Global research, including the landmark Southern California Children's Health Study, shows that children raised in heavily polluted environments often fail to reach their full lung capacity by early adulthood. In simple terms, their lungs are held back before they even reach their prime, leaving them with lower respiratory stamina and a much higher risk of chronic lung issues later in life. There is, however, clear hope. Cities with strict policy measures have successfully brought down pollution levels, and doctors have recorded measurable improvements in children's lung growth."

Dr Meena adds, "Repeated exposure to polluted air can cause symptoms such as chronic coughing, wheezing, difficulty breathing, throat irritation, and recurrent respiratory infections. In children with allergies or asthma, poor air quality can worsen the severity and frequency of attacks. Air pollution is also bad for you not just because of the immediate symptoms, but long-term effects as well. Long-term exposure, especially in the early years of life may hinder normal lung growth and lung function. It can also increase children's risk of developing asthma and other chronic lung diseases later in life. In addition, there are increasing defects with development and cardiovascular health of their body later in children exposed to air pollution."

Dr Kazi adds, "The immediate consequences are evident in paediatric clinics: increasing episodes of cough, wheezing, breathlessness, allergic rhinitis and asthma exacerbations. Children with pre-existing respiratory conditions are particularly vulnerable. However, the greater concern is the long-term impact. Repeated exposure to polluted air during critical years of lung development may reduce lung function, increase the risk of persistent respiratory symptoms and contribute to chronic respiratory illness in adulthood. Air pollution is not merely an environmental issue; it is a significant public health concern with lifelong implications. Its effects may extend beyond the lungs, influencing cardiovascular health, immunity and overall childhood development."

Early vulnerabilities and warning signs parents should not ignore

Dr Sarkar says, "For many urban families, the battle begins right in infancy. Babies exposed to higher pollution levels face a significantly higher risk of severe chest infections like bronchitis and pneumonia. For the growing number of Indian children living with asthma, days with high AQI mean persistent coughing, wheezing, terrifying flare-ups, and an increasing dependence on nebulisers and rescue inhalers. Worse still, heavy exposure to vehicular emissions, particularly nitrogen dioxide, doesn't just worsen existing asthma; it can actually cause healthy children to develop it in the first place."

Dr Bhagyawant says, "That is why parents should not ignore symptoms like coughing, wheezing, shortness of breath or low energy during play. These are not just issues. They are warning signs. Parents should take these signs seriously. Get help from a paediatrician. Children who already have asthma or allergies may need care. Their health needs to be watched closely."

Dr Meena says, "Then, further, kids being outside for long periods walking to school, playing in the park, playing sports activities. In the case of high levels of pollution in the air, outdoor exercises would bring the polluted air into the lungs, which worsens respiratory symptoms. To prevent this, parents should take precautions, especially on days when pollution is heavy. This includes checking the daily Air Quality Index (AQI), limiting outdoor exercise on high pollution days, keeping windows closed during high pollution periods, and ventilating indoor spaces when outside air quality is better. But only children old enough to wear a well-fitting N95 mask will gain protection from particulate pollution but not gas pollution from a well-hidden mask. Parents should also be alert to signs that children may be predisposed to illness, with persistent cough, wheezing, shortness of breath, excessive tiredness, or intolerance to physical activity. Once the symptoms appear, children should be assessed by a paediatrician or a respiratory specialist, and cough syrups and home remedies should not be administered to such children at home."

Dr. Asmita Mahajan, head of neonatology and paediatrician at S.L. Raheja Hospital, Mahim (a Fortis associate), adds, "Children may experience some unpleasant and even dangerous symptoms due to breathing polluted air in the short-term perspective, including such things as coughing, wheezing, inflammation of the respiratory tract, breathlessness, as well as respiratory infections. Children suffering from asthma or any other respiratory diseases may experience more frequent attacks and worsening of their condition. However, there are some other possible negative consequences of this problem."

Protecting the next generation requires collective action

Dr Kazi says, "Protecting children requires collective action. Parents should minimise outdoor activities during severe pollution episodes, encourage indoor physical activity, avoid exposure to tobacco smoke and ensure adequate ventilation with appropriate air filtration where feasible. Schools must monitor local air quality and modify outdoor activities when pollution levels are high. Policymakers must prioritise cleaner transport, stricter industrial emission controls, dust management and sustainable urban planning."

Dr Bhagyawant adds, "On Children’s Day we celebrate childhood.. We should also think about what is happening behind the scenes. We talk about nutrition, vaccines and exercise.. What about the air children breathe every day? That matters as much. Parents can check air quality index reports for their city. When pollution is high they can limit play. They can use masks that fit well when needed. They can keep indoor air clean, with filters or proper ventilation. These steps are only temporary solutions. The bigger truth is this: children should not have to lose lung strength just because they live in a city. Clean air is not a luxury. It is a right. Children deserve to grow up in a world where they can breathe freely. Where they can run, play and laugh without fear of harming their lungs. That is worth fighting for."

Dr Sarkar adds, "Not every child faces the same level of risk. Factors like age, genetics, nutrition, exposure to secondhand smoke, and where a family lives all influence how severely pollution affects a child’s lungs. Therefore, the responsibility should not rest with only the parents who invest in expensive air purifiers for their homes or confine their children indoors. The need is for some concrete measures to be taken in order to ensure our children's safety from pollution, which include setting tougher standards for emissions, use of clean fuel, improved transportation, dust control during construction, and effective air filtering in schools. On this Children's Day, instead of simply celebrating our children, it is time that we took some measures to secure the right of our children to a safe and healthy future."

Dr Meena adds, "On Children's Day, it is not just a seasonal measure to protect children from air pollution. For the sake of the next generation, children require cleaner air and pollution control, widely available air pollution monitors, regular checks on their respiratory health, and safer schools."

Dr Kazi adds, "This Children's Day, let us remember that protecting childhood means protecting the air children breathe. Healthy lungs are not just essential for today; they are an investment in a healthier generation tomorrow."