Insights & Analysis
The Air Quality Journal
27 Reports
Updated 6 Aug 2026
Lead StoryWhy Clean Air After Rain Doesn’t Last Forever
After a heavy rainfall, the air often feels fresher, the sky looks clearer, and AQI readings usually improve. Many people notice they can breathe more comfortably and assume that the pollution has disappeared. While rain does help clean the air, the improvement is usually temporary. Within a few days—or sometimes even a few hours—AQI levels … Read more
By AQI Team4 min read
ReadLatest Reports
26 Articles
The Importance of AQI Education in Schools
Air pollution has become a daily reality for millions of people, yet many students know very little about what the Air Quality Index (AQI) means or how it affects their health. Children often play outdoors, walk to school, and participate in sports without realizing whether the air they are breathing is safe. Teaching students about … Read more
What Is AQI and How Is It Calculated?
Have you ever checked your city’s Air Quality Index (AQI) before going outside? Whether you’re planning a morning walk, exercising outdoors, or sending your children to school, AQI is one of the easiest ways to understand how clean or polluted the air is. The Air Quality Index converts complex air pollution measurements into a simple … Read more
Why Traffic Pollution Doesn’t Disappear Even During the Rainy Season
Many people believe that the rainy season completely washes away air pollution. While rainfall can temporarily improve air quality by removing dust and some airborne particles, it does not eliminate pollution from vehicles. Traffic continues to release harmful gases and fine particles every day, even during heavy monsoon months. This is why cities with busy … Read more
Will El Niño or La Niña Affect AQI in India This Year?
Air quality in India is influenced by many factors, including vehicle emissions, industrial activity, weather conditions, and seasonal changes. However, one factor that often receives less attention is the impact of large-scale climate patterns such as El Niño and La Niña. These weather phenomena occur in the Pacific Ocean but can influence rainfall, temperatures, and … Read more
Why PM2.5 Remains India’s Biggest Air Pollution Challenge
India faces several forms of air pollution, but PM2.5 remains one of the most serious and difficult pollutants to control. These microscopic particles are far smaller than the width of a human hair and can remain suspended in the air for long periods. Because of their tiny size, they can travel deep into the lungs … Read more
How to Explain AQI to Kids in Simple Words
Have you ever checked the Air Quality Index (AQI) and wondered how to explain it to a child? Since air pollution is becoming a growing concern in many cities, children often hear adults talking about AQI, pollution, or smog. Naturally, they may ask questions like, “What is AQI?” or “Why can’t I play outside today?” … Read more
Should Schools Close During Severe Air Pollution?
Every winter, when the Air Quality Index (AQI) reaches “very poor” or “severe” levels, one question quickly becomes a topic of public debate: Should schools remain open or switch to online classes? Parents worry about their children’s health, teachers raise concerns about prolonged exposure, and education authorities must balance safety with learning continuity. There is … Read more
Can Artificial Intelligence Help Predict AQI More Accurately?
Air quality can change quickly due to weather conditions, traffic patterns, industrial activity, and seasonal pollution sources. Because of these constantly changing factors, predicting the Air Quality Index (AQI) accurately remains a major challenge for scientists and environmental agencies. In recent years, Artificial Intelligence (AI) has emerged as a powerful tool that may help improve … Read more
Household Pollution: Causes, Health Risks, and Prevention Strategies
When people think about air pollution, they often picture traffic congestion, industrial emissions, or smog-filled city skylines. However, pollution is not limited to outdoor environments. Many homes contain pollutants that can affect indoor air quality and potentially impact health. Since most people spend a significant portion of their time indoors, household pollution can be an … Read more
What Experts Are Predicting for India’s Air Quality This Winter
As the monsoon ends and temperatures begin to fall, attention will once again turn to India’s winter air pollution problem. Experts expect northern cities, especially Delhi-NCR and parts of Uttar Pradesh, Haryana, Punjab and Rajasthan, to face repeated periods of poor to severe air quality during the 2026–27 winter. However, this does not mean every … Read more
Do Electric Vehicles Help Reduce City AQI?
Electric vehicles are often presented as an important solution to urban air pollution. Unlike petrol or diesel vehicles, fully electric cars do not release exhaust emissions while driving. This can reduce pollution from busy roads and improve local air quality, especially in cities where traffic is a major source of nitrogen dioxide, carbon monoxide, and … Read more
Does Planting Trees Really Reduce AQI in Indian Cities?
Tree plantation drives are a common response to air pollution in India. Every year, governments, schools, businesses, and environmental groups plant thousands of trees with the hope of improving air quality. Since many Indian cities regularly experience poor AQI levels, planting more trees is often seen as a simple solution. But does planting trees actually … Read more
Will Crop Burning Affect AQI Again This Year? What Experts Are Watching
Every year after the monsoon, concerns about crop burning return as air quality begins to decline across northern India. Farmers in some regions burn leftover crop residue to prepare fields for the next planting season, releasing large amounts of smoke and fine particulate matter into the atmosphere. As a result, many people wonder whether crop … Read more
Why Wildfire Smoke Can Travel Thousands of Miles: The Science Behind Long-Distance Air Pollution
When a wildfire breaks out, most people assume the impact is limited to nearby communities. However, recent wildfire seasons have shown that smoke can travel thousands of miles, affecting air quality in regions far removed from the actual fires. In recent years, smoke from Canadian wildfires has reached major cities across North America, while smoke … Read more
How Heatwaves Increase Ground-Level Ozone and Make Air Pollution Worse
Heatwaves are often associated with extreme temperatures, dehydration, and increased energy demand. However, one of their less visible impacts is the effect they have on air quality. During periods of prolonged heat, many cities experience a rise in ground-level ozone, a harmful air pollutant that can significantly worsen Air Quality Index (AQI) readings and increase … Read more
Canadian Wildfire Smoke Is Back: Why Millions Are Facing Poor Air Quality Again
Canadian wildfire smoke is once again affecting air quality across large parts of North America. From major Canadian cities to communities across the United States, millions of people are seeing hazy skies, receiving air quality alerts, and experiencing unhealthy AQI levels. Even regions located hundreds of miles away from active wildfires are being impacted as … Read more
Why Is AQI Better During the Monsoon but Worse in Winter?
If you regularly check the Air Quality Index (AQI), you may have noticed a clear pattern: air quality often improves during the monsoon season and deteriorates significantly during winter. In cities like Delhi, Mumbai, Kolkata, and many other urban centers, AQI readings can shift dramatically between seasons. But why does this happen? The answer lies … Read more
Delhi Records Its Cleanest Air in Nearly Three Years: What Changed?
For a city that often dominates headlines for hazardous smog and poor air quality, Delhi recently achieved something remarkable. The national capital recorded its cleanest air in nearly three years, offering residents a rare period of healthier skies and improved visibility. The development has sparked discussions among environmental experts, policymakers, and citizens alike: What changed, … Read more
Can Masks Protect You From PM2.5? N95 vs Surgical Masks
When air quality becomes unhealthy, many people wear a mask before going outside. However, not every mask offers the same level of protection against PM2.5. Surgical masks may cover the nose and mouth, but they are designed differently from respirators such as N95 masks. PM2.5 particles are extremely small and can travel deep into the … Read more
Why Is AQI Different Across the Same City?
Have you ever checked an air quality app and noticed that one part of your city has a significantly different Air Quality Index (AQI) than another? It can seem surprising, especially when the locations are only a few kilometers apart. After all, if they’re in the same city, shouldn’t the air quality be roughly the … Read more
Can Poor Air Quality Affect Your Sleep?
Most people associate air pollution with respiratory problems, allergies, or reduced outdoor visibility. However, poor air quality can also affect something many people don’t immediately connect to pollution: sleep. While factors such as stress, screen time, and caffeine are well-known causes of sleep disturbances, the quality of the air you breathe can also play an … Read more
How Climate Change Is Increasing Air Pollution Around the World
Climate change and air pollution are often discussed as separate environmental challenges, but they are closely connected. Rising global temperatures, changing weather patterns, and more frequent extreme weather events are not only affecting ecosystems and communities—they are also contributing to worsening air quality in many parts of the world. As the climate continues to warm, … Read more
How Air Pollution Impacts Children More Than Adults
Air pollution affects people of all ages, but children are among the most vulnerable to its harmful effects. While adults can experience respiratory irritation, reduced lung function, and other health problems from polluted air, children often face greater risks because their bodies are still developing. Even short-term exposure to poor air quality can affect a … Read more
World Top 10 Hottest Cities Are All in India Again - May 2026
For the second consecutive month, Indian cities dominate the global heat charts. We analyze the meteorological drivers behind this unprecedented heatwave.
Delhi Air Quality 2026 vs 6-Year Historical PM2.5 Data
Statistical analysis comparing 2026 PM2.5 averages to historical data since 2020, highlighting trends and regulatory impacts.
What 17 Years of Delhi Temperature Data Reveal About May's Heatwave Escalation
A deep dive into 17 years of meteorological recordings to trace the steady rise of summer temperatures and heatwave durations in Delhi NCR.