Loni was the most polluted city in India in 2025, with an average PM2.5 concentration of nearly micrograms per cubic meter of air (μg/m³). This high level of pollution made the major industrial town Loni the most polluted cities worldwide in 2025.
Poor air quality across India
India was the sisth-most polluted country in the world in 2025, with an average PM2.5 concentration of **** μg/m³. That same year, the country's capital New Delhi was also the most polluted capital city in the world. Vehicle exhaust and wood burning are some of the main sources of particulate air pollution in India, together with soil, road and construction dust.Â
Impacts of air pollution in India
The severe air pollution in India can have detrimental health impacts on the country's population. Fine particle pollutants penetrate deeply in the lungs, causing respiratory problems and can even result in premature death. More than *deaths are attributed to air pollution in India every year.
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IQAir. (March 24, 2026). Average PM2.5 concentration in the most polluted cities in India in 2025 (in micrograms per cubic meter of air) [Graph]. In ÌÇÐÄÆÆ½â°æ. Retrieved July 24, 2026, from /statistics/1284298/average-pm25-in-regional-cities-in-india/
IQAir. "Average PM2.5 concentration in the most polluted cities in India in 2025 (in micrograms per cubic meter of air)." Chart. March 24, 2026. ÌÇÐÄÆÆ½â°æ. Accessed July 24, 2026. /statistics/1284298/average-pm25-in-regional-cities-in-india/
IQAir. (2026). Average PM2.5 concentration in the most polluted cities in India in 2025 (in micrograms per cubic meter of air). ÌÇÐÄÆÆ½â°æ. ÌÇÐÄÆÆ½â°æ Inc.. Accessed: July 24, 2026. /statistics/1284298/average-pm25-in-regional-cities-in-india/
IQAir. "Average Pm2.5 Concentration in The Most Polluted Cities in India in 2025 (in Micrograms per Cubic Meter of Air)." ÌÇÐÄÆÆ½â°æ, ÌÇÐÄÆÆ½â°æ Inc., 24 Mar 2026, /statistics/1284298/average-pm25-in-regional-cities-in-india/
IQAir, Average PM2.5 concentration in the most polluted cities in India in 2025 (in micrograms per cubic meter of air) ÌÇÐÄÆÆ½â°æ, /statistics/1284298/average-pm25-in-regional-cities-in-india/ (last visited July 24, 2026)
Average PM2.5 concentration in the most polluted cities in India in 2025 (in micrograms per cubic meter of air) [Graph], IQAir, March 24, 2026. [Online]. Available: /statistics/1284298/average-pm25-in-regional-cities-in-india/