10 Most Polluted Cities in Thailand (2023 Rankings)

Looking to find the most polluted cities in Thailand? Smart Air analyzed 2023 air pollution data for dozens of Thailand cities to generate the 2023 ranking of the “10 Most Polluted Cities in Thailand”. Scroll down for the full rundown of the most polluted cities in Thailand and their annual …

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10 Least Polluted Cities in Thailand (2023 Rankings)

Looking to find the least polluted cities in Thailand to get a break from air pollution? Smart Air analyzed 2023 air pollution data for dozens of Thailand cities to generate the 2023 ranking of the “10 Least Polluted Cities in Thailand”. Scroll down for the full rundown of the least …

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What level of PM2.5 is safe?

What Level of PM2.5 Is Safe? New Research Reveals

The WHO’s guideline limit for PM2.5 is 5 micrograms. But research shows reducing PM2.5 levels under 5 micrograms has significant health benefits and reduces mortality. What is the safe limit of PM2.5? Is the WHO PM2.5 Guideline of 5 Micrograms Safe? The WHO PM2.5 guideline is not intended to represent …

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10 Most Polluted Cities in the United States (2023 Rankings)

Looking to find the most polluted cities in the United States? Smart Air analyzed 2023 air pollution data for dozens of United States cities to generate the 2023 ranking of the “10 Most Polluted Cities in the United States”. Scroll down for the full rundown of the most polluted cities …

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10 Least Polluted Cities in the United States (2023 Rankings)

Looking to find the least polluted cities in the United States to get a break from air pollution? Smart Air analyzed 2023 air pollution data for dozens of United States cities to generate the 2023 ranking of the “10 Least Polluted Cities in the United States”. Scroll down for the …

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Air Pollution Lowers Test Scores

Better Air Quality Improves Student Test Scores

Looking to improve student test scores? Multiple studies show improving air quality and lowering indoor air pollution levels can have a significant impact on test scores and student cognitive ability. In the past, we discussed air pollution reduces productivity on the job. Studies show this also extends to students in …

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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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20 Most Polluted Cities in India (2023 Rankings)

Air pollution is one of the leading causes of death in India. So which cities in India are the most polluted? Smart Air analyzed 2022 air pollution data for dozens of Indian cities to generate the 2023 ranking of the “20 Most Polluted Cities in India”. Scroll down below for …

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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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