The city’s air is full of deadly, tiny pollutant particles that are less than a micrometre in diameter — a human hair is 100 micrometres — a new study of air pollution levels in three Indian cities found. The study found that Mumbai recorded the highest concentration of PM1 in the larger PM 2.5 pollutants that float around in the air, across seasons in 2017. “The high concentration of PM1 in Mumbai’s air is a health concern because 50% of the PM2.5 pollutant in Mumbai’s air is made up of PM1,” Beig said. During the winter, Delhi saw the highest concentration of PM1 in PM2.5 at 47%, followed by Mumbai and Ahmedabad at 46% and 41%. However, when the concentration is high within PM2.5, it shows how citizens are exposed to these tiny, deadly small pollutant particles,” said Beig.

Source: Hindustan Times May 07, 2018 04:21 UTC