According to the CPCB, the air quality index (AQI), a measurement of the concentration of toxic particulate matter in air, at several places in Delhi remained over 500
Delhi Pollution/AFP
Delhi's air quality remained severe for the fourth consecutive day today, even as authorities expressed hope that the condition would improve with strong winds expected to clear the stagnant air. The PM10 level (presence of particles with diameter less than 10 mm) was recorded at 754 in Delhi-NCR and 801 in Delhi, leading to hazy conditions.
The PM2.5 level (presence of particles with diameter less than 2.5 mm) that deteriorated from 'very poor' to 'severe' showed improvement today at 184 in Delhi region and 175 in Delhi NCR, said the Central Pollution Control Board (CPCB) data. Yesterday, the PM 2.5 level in Delhi-NCR was at 268 and Delhi at 277.
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According to the CPCB, the air quality index (AQI), a measurement of the concentration of toxic particulate matter in air, at several places in Delhi remained over 500. An AQI between 0-50 is considered good, 51-100 satisfactory, 101-200 moderate, 201-300 poor, 301-400 very poor and 401-500 severe.
As the national capital region struggles with a severe dust pollution, Lieutenant Governor Anil Baijal had yesterday ordered stoppage of all civil construction activities across the city till Sunday as part of the emergency measures which also include intensifying mechanical road sweeping.
Strong winds are expected to clear the air, said Gufran Beig, a scientist at the Centre-run System of Air Quality and Weather Forecasting and Research institute (SAFAR). "The air quality is expected to improve and clear the stagnated dusty air that has primarily led to the rise in the pollution level," he said. The India Meteorological Department said that the strong winds are expected to continue over the region.
"Strong dust raising winds of the order of 25-35 kmph likely to continue over Rajasthan, Punjab, Haryana, Chandigarh and Delhi and west Uttar Pradesh during next 24 hours," the IMD said. It also predicted thunderstorms at isolated places over the city in the coming days, bringing relief from the dusty air. "Thunderstorm accompanied with gusty winds and lightning very likely at isolated places over Jammu & Kashmir, Punjab, Haryana, Chandigarh & Delhi , Rajasthan, east Uttar Pradesh, Bihar and north coastal Tamilnadu," it said.
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