New Delhi is World’s Most Polluted City: IQAir Study
According to “2020 World Air Quality Report”, the capital
city of India, New Delhi, is the world’s most polluted capital across the world
for the third straight year in the year 2020.
The Swiss group “IQAir” measures the air quality levels on the basis
of concentration of lung-damaging airborne particles.
India is home to 35 of the polluted cities out of world’s 50
most polluted cities.
IQAir Study had prepared the report by collecting data
across 106 countries.
The findings of the report were based on annual average of
particulate matter PM2.5 and the airborne particles having diameter less than
The Prolonged exposure to PM2.5 results into the deadly
diseases like cancer and cardiac problems.
The report highlights that, in the year 2020, the average
annual concentration of PM2.5 of New Delhi was 84.1 cubic meter of air.
This figure was more than double the level of PM 2.5
concentration in Beijing with the average of 37.5 in 2020.
Thus, it was the 14th most polluted city across the world.
The study by Greenpeace Southeast Asia Analysis & IQAir
states that, the air pollution resulted into an estimated 54,000 premature
deaths in New Delhi in the year 2020.
The report further highlights that, amid the covid-19 led
lockdown had resulted into 11 % reduction in annual average of the PM 2.5
Despite that, India become the world’s third most polluted
The top polluted countries include Bangladesh and Pakistan.
Report also stated that, the average PM 2.5 levels was 144 micrograms per cubic
metre in November 2020 and in December it increased to 157 micrograms per cubic
metre because of stubble burning.
This was 14 folds greater than the annual exposure
guidelines of the World Health Organisation.