By Abbas Nazil
Delhi ranked as the third most polluted major city on September 14, 2025, with air quality levels reaching the “unhealthy for sensitive groups” category and an Air Quality Index (AQI) above 140.
Some neighborhoods recorded even higher pollution levels, posing significant risks to children, the elderly, and people with respiratory conditions.
The latest data from IQAir showed that despite being slightly lower than the 2024 annual average of 108.3 µg/m³ PM2.5 (equivalent to an AQI of 178), the current figures remain dangerously high and nearly 22 times greater than the World Health Organization’s safe guideline.
This situation highlights the city’s ongoing struggle with air pollution, even on days considered “better” compared to historical averages.
Forecasts indicate that air quality may improve gradually by the end of the day due to stronger winds dispersing pollutants, with AQI levels potentially dropping below 110.
Daily monitoring over the past month shows fluctuations, but the latest spike demonstrates how quickly conditions can worsen during the seasonal transition.
Experts attribute Delhi’s poor air quality to multiple factors including vehicular emissions, industrial pollution, and dust from ongoing construction.
Crop residue burning in neighboring states such as Punjab and Haryana adds to the toxic haze, particularly in the post-monsoon season.
Weather conditions like temperature inversions and weak winds further trap pollutants at ground level, exacerbating smog intensity.
Delhi’s location in the Indo-Gangetic Plain also makes it vulnerable to pollution drifting from other regions, compounding local emissions.
Health experts advise residents to limit outdoor activity, wear protective KN95 or FFP2 masks, and use air purifiers indoors.
The persistence of hazardous levels underscores the urgent need for stronger policy action, regional cooperation, and emission control to protect the health of millions living in India’s capital.
