9/18/2023 0 Comments Global air quality city ranking![]() However, despite the readings classing it at a moderate level, there are times when it crosses rapidly over this line to significantly worse pollution with levels of PM2.5 and other contaminants found lingering in the air. ![]() The rain offers a cleansing to the air quality as it naturally pulls the fine particulate matter and other pollutants such as nitrogen dioxide (NO 2) and sulfur dioxide (SO 2) out of the air. Reasons for the lowered PM2.5 readings may be directly linked to seasonal influence, with the rainy season starting at around July and lasting till October. Observing data taken from 2019, the months of June through to August are the months that have the cleanest levels of pollution, with drastically lowered PM2.5 ratings. This puts it at a ‘moderate’ rating according to the US Air Quality Index, which according to the stringent US standards of measurement, is any number between 12.1 to 35.4μg/m 3. ![]() In 2019 the average reading of fine particulate matter in the air, or PM2.5, was found to be concentration of 22.8 μg/m 3. ![]() Bangkok, the capital of Thailand, is a very densely populated city, with over ten and half million people estimated to be living there in 2020, with a city size of 1,569 km². ![]()
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