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The following list of countries by air pollution sorts the countries of the world according to their average measured concentration of particulate matter in micrograms per cubic meter (μg/m 3). The World Health Organization's recommended limit is 5 micrograms per cubic meter, although there are also various national guideline values, which are ...
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 ...
Only 0.001 per cent of the world’s population breathes air considered acceptable, says study Asian countries have the worst air quality in the world, study finds Skip to main content
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
Delhi overtook Pakistan’s Lahore as the world’s most polluted city in Swiss group IQAir’s live rankings, with an air quality index (AQI) score of more than 1,000, which is considered ...
On Saturday, Bangkok was rated as the world’s seventh-most polluted city based on its air quality. It was the second-worst in Southeast Asia after Ho Chi Minh City in Vietnam .
The World Health Organization's Global Air Quality Guidelines encourage improvements in a similar way to national standards, but are "recommendations" and "good practice" rather than mandatory targets that countries must achieve.
People living in the Midwest and Northeast were warned of a worsening air quality index throughout the week due to smoke from the Canadian wildfires