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“Bangkok Metropolitan Administration has closed 352 schools across 31 districts due to air pollution,” the authority said. The level of PM2.5 pollutants hit 108 micrograms a cubic metre ...
According to Swiss-based IQAir, Bangkok was ranked as the city having the world's fourth worst air quality. [14] On 26 January, greater Bangkok recorded orange levels of PM2.5. [15] Air quality exceeding safety standards in 38 districts in Bangkok, with districts categorized as yellow and orange zones. [16]
The January 2024 version of the WHO database contains results of ambient (outdoor) air pollution monitoring from almost 5,390 towns and cities in 63 countries. Air quality in the database is represented by the annual mean concentration of particulate matter (PM10 and PM2.5, i.e. particles smaller than 10 or 2.5 micrometers, respectively). [1 ...
Air pollution is a particularly big problem in emerging and developing countries, where global environmental standards often cannot be met. The data in this list refers only to outdoor air quality and not indoor air quality, which caused an additional two million premature deaths in 2019.
Seven out of the eleven cities measured (63.6%) did not reach the National Ambient Air Quality Standard annual limit of 25 μg/m 3 for PM2.5 and all 11 cities measured did not reach the World Health Organization (WHO) guideline annual limit of 25 μg/m 3. Thailand's national air quality standards are weak when compared to WHO recommendations. [45]
Air quality technology company IQAir reports that Hanoi, Vietnam, has the worst air pollution of any city on Earth, with levels of hazardous small particles, known as PM2.5, measured at 266 micrograms per cubic metre. International relations. Egypt–Syria relations
In European countries, air quality at or above 10 micrograms per cubic meter of air (μg/m 3) for PM 2.5 increases the all-causes daily mortality rate by 0.2-0.6% and the cardiopulmonary mortality rate by 6-13%. [35] Worldwide, PM 10 concentrations of 70 μg/m 3 and PM 2.5 concentrations of 35 μg/m 3 have been shown to increase long-term ...
Below is a list of 526 cities sorted by their annual mean concentration of PM2.5 (μg/m 3) in 2022. [1] [2] By default the least polluted cities which have fewest particulates in the air come first.