The world is encapsulated by toxic air pollution. WHO raises alarm 99% of world population breathing contaminated air. In the 117 nations that measure air quality, 17 per cent of cities in high metropolitan cities have air quality that is below the WHO’s PM2.5 or PM10 guidelines. In developing and underdeveloped countries air quality is only met in less than 1 per cent of cities. Almost all of the world’s population (99%) breathes air that is polluted exceeding WHO limits, creating a herculean risk.
The largest amounts of fine particulate matter and nitrogen dioxide are seen in low and middle-income countries.
Residents are still breathing highly contaminated air and nitrogen dioxide, according to a survey of 6,000 cities in 117 nations that monitor air quality. The World Health Organization has emphasised the importance of lowering air pollution levels by reducing fossil fuel consumption and implementing other appropriate measures. In the run-up to World Health Day, the World Health Organization updated its air quality database, which this year includes ground measurements of annual mean concentrations of nitrogen dioxide (NO2), a common urban pollutant and precursor of particulate matter and ozone.
It encompasses particulate matter with a diameter of 10 m (PM10) or 2.5 m (PM2.5), both of which are mostly created by anthropogenic activities such as fossil fuel combustion. The World Health Organization (WHO) updated its Air Quality Guidelines last year to make them more informed, allowing countries to adequately measure the health of their air. In the 117 countries that track air quality, 17% of cities in high-income countries have air quality that falls below WHO criteria for PM2.5 or PM10. Air quality is only met in less than 1% of cities in emerging and underdeveloped countries.
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