 "Air Pollution")
Air quality shows no signs of improvement in Delhi-NCR, AQI at 331
Delhi's air quality remained in the 'very poor' category on Friday after showing signs of improvement as the overall Air Quality Index (AQI) was recorded the worst in the season so far at 345, by the System of Air Quality Forecasting and Research (SAFAR).
PM2.5 (presence of particles in the air with a diameter of less than 2.5 micrometres) was recorded at 178. PM10 level (presence of particles in the air with a diameter of less than 10 micrometres) in Delhi stood at 343, according to the data
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