On Sunday, the concentration of PM2.5 in Delhi’s air crossed the mark of 500 micrograms per cubic metre in the morning. However, as wind speed picked up and crossed 12kmph over the next few hours, there was a sharp drop in localised pollution, and PM2.5 reading dropped to the acceptable standard of 60 micrograms per cubic metre by the evening. On Monday, Delhi’s AQI improved from the ‘very poor’ level to ‘poor’, highlighting again how dependent the city air is on the meteorological factor of the winds blowing at some speed.from Delhi News: Latest Delhi News Headlines & Live Updates from Delhi - Times of India https://ift.tt/3oOcOKp
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