Fourprivateschools in Gurgaon (including mine) have declared holiday on Friday due to the severequalityofair, while other schools have issued advisories for students to wear mask and curboutdooractivities.
PM2.5 is a suspended particulate matter which is a major constituent of airpollution. Being a very fine particle it can settle in the lungs and cause various respiratoryproblems.
Data showed PM2.5 level reaching 727microgramspercubicmetre. The permissible limit is just 60 micrograms per cubic metre.
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Picture credits: HINDUSTAN TIMES