A recent study, conducted for the first time in the world, shows that air pollution is not at a safe level almost anywhere on the planet. This study was conducted by Monash University in Australia and it indicates that only 0.001% of the world’s people were exposed to low air pollution in 2019. According to this survey, the level of air pollution has exceeded the permissible limit in 70% of the days of the year all over the world.
Statistics show that 8 million people in the world die every year due to air pollution. Small particles with a width of less than 2.5 micrometers known as PM2.5 by attacking our airways and blood vessels, can lead to stroke, cancer and heart diseases.
The World Health Organization has declared the safety threshold for exposure to PM2.5 to be around 15 micrograms per cubic meter daily; But between 2000 and 2019, the average level of air pollution around the world was more than double this amount (32.8 micrograms per cubic meter).
This review is the first to show the change in global exposure to air pollution over the past few decades. The data of this study were extracted from 5,446 monitoring stations in 65 countries and processed using machine learning and simulation.
Science Alert In his report, he writes that based on a recent study, East Asia had the worst air pollution in the world over a 20-year period with an average of 50 micrograms per cubic meter of PM2.5 per year. South Asia with an average of 37.2 micrograms per cubic meter and North Africa with an average of 30 micrograms per cubic meter are in the next ranks of this report.
This report also introduces the areas with the lowest amount of air pollution. Based on this, Australia and New Zealand with an annual average of 8.5 micrograms per cubic meter of PM2.5 and other regions of Oceania with 12.6 micrograms per cubic meter and South America with 15.6 micrograms per cubic meter are the areas that have been studied by researchers for two decades. In terms of pollution, they have been in a better condition.