Air pollution remains a significant problem in many cities worldwide, severely impacting health and quality of life. Several factors, including industrial emissions, vehicle exhaust, and poor waste management, contribute to hazardous air quality levels. This list highlights the top 10 most polluted cities, where efforts to curb pollution have had mixed success, and urgent action is still needed to improve conditions.
As of October 2024, Lahore holds the title of the world’s most polluted city, with an alarming Air Quality Index (AQI) of 232, categorizing it as “very unhealthy.” The primary pollution sources include vehicular emissions, industrial activities, and construction dust. Residents often face warnings to avoid outdoor exposure, especially during high pollution periods, to reduce health risks associated with the poor air quality.
Lahore city of Pakistan, with an Air Quality Index of 232, stands as the most polluted city of the world by October 2024, followed by Delhi, Dakar and Kinshasa.
Here is the list of top-10 most polluted cities in the world by October 2024:
| Most Polluted Cities in the World by October 2024 | |||
| Rank | City | Country | AQI |
| 1. | Lahore | Pakistan | 232 |
| 2. | Delhi | India | 204 |
| 3. | Dakar | Senegal | 155 |
| 4. | Kinshasa | Democratic Republic of the Congo | 155 |
| 5. | Dhaka | Bangladesh | 142 |
| 6. | Ulaanbaatar | Mongolia | 132 |
| 7. | Hanoi | Vietnam | 128 |
| 8. | Jakarta | Indonesia | 117 |
| 9. | Kolkata | India | 113 |
| 10. | Bucharest | Romania | 106 |
The air quality index (AQI) is a number used by governments to show how clean or dirty the air is. When the AQI goes up, it means the air pollution is getting worse, which can harm people’s health, especially kids, older adults, and those with breathing or heart issues. When pollution is high, officials often advise staying indoors, limiting outdoor activities, or wearing masks like N95s, especially during events like wildfires. Using air purifiers at home is also recommended.
The Air Quality Index (AQI) bands indicate air pollution levels, providing health advice based on how clean or polluted the air is.
| AQI | Category |
| 0-33 | Very good |
| 34-66 | Good |
| 67-99 | Fair |
| 100-149 | Poor |
| 150-200 | Very poor |
| 200+ | Hazardous |
As of October 2024, Lahore holds the title of the world’s most polluted city, with an alarming Air Quality Index (AQI) of 232, categorizing it as "very unhealthy."
Delhi city of India, with an Air Quality Index of 204, stands as the second most polluted city of the world by October 2024
The top-5 most polluted cities in the world by October 2024 are: Lahore, Delhi, Dakar, Kinshasa and Dhaka.
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