Air pollution shortened average Indian life expectancy by 5.2 years: Report
The World Health Organisation guideline stipulates that PM2.5 (particulate matter less than 2.5 microns in diameter) not exceed 10 micron per cubic metre and that PM10 (particulate matter less than 10 microns in diameter) not exceed 20 micron per cubic metre.
Jul 28, 2020, 19:55 PM IST