Twenty-one of the world's 30 cities with the worst air pollution are in India, according to data compiled in IQAirAirVisual's 2019 World Air Quality Report, with six in the top ten.
Context
Twenty-one of the world's 30 cities with the worst air pollution are in India, according to data compiled in IQAirAirVisual's 2019 World Air Quality Report, with six in the top ten.
About:
WHO’s guideline:
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Mapping the most polluted cities:
Country-wise data:
Has India improved?
What is Particulate Matter?
Particulate matter is categorized as PM 2.5 and PM 10.
PM 2.5 |
PM 10 |
PM2.5 is particulate matter 2.5 micrometres or less in diameter |
PM10 is particulate matter 10 micrometres or less in diameter |
PM2.5 is generally described as fine particles. By way of comparison, a human hair is about 100 micrometres, so roughly 40 fine particles could be placed on its width.
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These small particles, 30 times smaller than the width of a hair on your head, are small enough to get caught up in our defensive nose hairs and into the upper airways of our lungs. |
Due to the microscopic size, Particulate matters enter the respiratory system in the bloodstream and causes severe respiratory problems. |
The report revealed that India still has a relatively limited air quality monitoring network given its population size, with many communities and highly populated cities without access to real-time information. There is a need for some urgent actions and steps to correct the situation now, otherwise, it will be too late to manage anything.
Verifying, please be patient.