25 Most Polluted Cities in the World (2023 Rankings)

Air pollution ranks among the top causes of death in the world. But which cities and countries are the most polluted (dirtiest) in the world? Smart Air analyzed 2022 PM2.5 data for 529 major cities from 88 countries around the world to create the 2023 updated ranking of the “Top …

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Shenzhen Air Pollution

What Are The Least Polluted Cities in China? (2023)

Looking to find one of the least polluted cities in China to get a break from the pollution? Here is a list of the least polluted cities for 2023 with the best air quality in China. Rankings: Least Polluted Cities in China (2023) 1. Lhasa, Tibet (6.48 μg/m3) 2. Haikou, …

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Xian Air Pollution

What Is The Most Polluted City in China? (2023)

Cities in China have consistently ranked among the most polluted in the world. Just how bad is it? Smart Air analyzed 2022 pollution data from 51 cities in China to find the most polluted cities in China. Rankings: Most Polluted Cities in China (2020) 1) Xi’an, Shaanxi Province (48.11 μg/m3) …

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Has Pollution in China’s Major Cities Increased in 2021?

China’s economy has rebounded in 2021 from major slowdowns due to COVID-19 the previous year. But has the economic rebound come at the cost of more air pollution and worse air quality in China’s major cities? Smart Air analyzed PM2.5, PM10, and ozone pollution data for 10 major Chinese cities …

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How’s the Air Quality in Tangshan?

There are reasons to be pessimistic about the air quality in Tangshan. Tangshan is a largely industrial city in Hebei province, which is the industrial heartland of China and one of the most polluted provinces. Tangshan also boasts one of China’s top 10 busiest ports.     To get some …

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Is Beijing or Delhi Air Worse?

Beijing and Delhi often make headlines for air polluted cities, but which city has worse air? I wanted to get some hard numbers on how the two cities’ air quality compare.   The Data To do that, I analyzed PM2.5 data from the US Embassies in Delhi and government monitors …

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Smart Air low cost purifiers

Smart Air is a social enterprise and certified B-Corp that offers simple, no-nonsense air purifiers and provides free education to protect people from the harms of air pollution. We are proud to be the only certified B-Corp dedicated to fighting air pollution.

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