Punjab Cities Feature Prominently in Global Pollution Rankings for 2025
Two cities in Punjab, along with Chandigarh, have secured positions below the top 100 in the list of the world's most polluted urban centers based on their annual average particulate matter (PM2.5) concentrations for the year 2025. This critical data comes from the latest comprehensive analysis conducted by IQ Air, a Swiss air quality technology firm renowned for its reliability in environmental monitoring.
Top Polluted Cities in Punjab and Their Global Standing
Mandi Gobindgarh has emerged as the most polluted city within Punjab, achieving a global rank of 44. The city recorded an annual average PM2.5 level of 60 micrograms per cubic meter (µg/m³) in 2025. This represents a significant improvement from the previous year's figure of 78.4 µg/m³, indicating a positive trend in air quality management efforts.
Chandigarh follows closely, positioned at rank 57 globally. The city's annual PM2.5 concentration stood at 54.3 µg/m³ in 2025, showing a notable reduction from 69.7 µg/m³ recorded in 2024. This downward trajectory suggests effective pollution control measures are being implemented in the region.
Ludhiana claims the third spot among Punjab's most polluted cities, securing global rank 66. The city reported an annual average PM2.5 level of 52.8 µg/m³ for 2025, marking a decrease from 60.8 µg/m³ in the preceding year. These figures highlight the persistent air quality challenges facing urban centers in northern India.
Additional Punjab Cities in the Global Pollution Landscape
Beyond these three prominent cities, several other urban areas in Punjab were ranked between positions 100 and 200 in the global pollution index:
- Amritsar achieved rank 101 with PM2.5 levels of 46.6 µg/m³, down from 57.3 µg/m³ in 2024.
- Khanna secured rank 104 with PM2.5 concentrations of 46.4 µg/m³, reduced from 49.7 µg/m³ the previous year.
- Jalandhar was positioned at rank 117 with annual PM2.5 levels of 45.1 µg/m³, showing improvement from 48.6 µg/m³ in 2024.
- Patiala ranked 172 with PM2.5 levels of 41.3 µg/m³, a decrease from 48.0 µg/m³ recorded in the previous year.
Further down the list, Roopnagar claimed rank 219 with annual PM2.5 concentrations of 39.2 µg/m³, improved from 48.4 µg/m³ in 2024. Bathinda was ranked 310 with PM2.5 levels of 35.9 µg/m³, showing a marginal increase from 35.6 µg/m³ in the preceding year.
Global Context and WHO Safety Standards
The World Health Organization (WHO) has established an annual PM2.5 guideline of 5 µg/m³ as the safe limit for human health. All the mentioned cities in Punjab significantly exceed this threshold, highlighting serious public health concerns. The IQAir report analyzed data from 9,446 cities across 143 countries, providing one of the most comprehensive assessments of global air pollution available.
On a national scale, Loni in India was recorded as the most polluted city worldwide, with an annual average PM2.5 concentration of 112.5 µg/m³. This alarming figure exceeds the WHO safety guideline by more than 22 times. The report further reveals that all 25 of the world's most polluted cities are located in India, Pakistan, and China, with India hosting three of the four most severely affected urban centers.
Broader Trends in Global Air Quality
The 2025 IQAir World Air Quality Report represents the organization's eighth annual assessment, offering critical insights into persistent health risks, emerging regional patterns, and significant monitoring gaps worldwide. When comparing this year's findings with previous data, the report indicates that 54 countries experienced increases in their annual average PM2.5 concentrations, while 75 countries saw declines. Two countries maintained unchanged pollution levels, and 12 nations were newly represented in this year's comprehensive dataset.
This detailed analysis underscores the urgent need for continued and enhanced air quality management strategies across Punjab and throughout India to protect public health and environmental sustainability.
