Gurgaon: The citys air quality index (AQI) improved to 196 (moderate) on Tuesday from 311 (very poor) the day before. This was due to drizzle and a rise in wind speed from 6kmph on Monday to 8kmph, which helped pollutants disperse, experts said. Before this, the last time the city witnessed a moderate air day was on November 12 (193). Since then, the AQI has been fluctuating between poor and very poor.On Tuesday, the AQI was moderate at all four stations in the city. It was the highest at Gwalpahari (299), followed by Teri Gram (251), Vikas Sadan (229) and Sector 51 (205). Neighbouring Delhi reported very poor AQI at 312, whereas Faridabad (250), Noida (261) and Ghaziabad (250) recorded poor air.Light rain and better wind speed have helped in improving AQI suddenly, but as the pollutants are likely to get trapped due to severe cold, it will again deteriorate, said Shubhansh Tiwari, a research associate at the Centre for Science and Environment.According to Safar, weather conditions are likely to be highly unfavourable for dispersion of pollutants from November 30. The predominant surface wind is likely to be coming from the northeast or southeast with speeds of up to 8kmph. There will also be fog, it stated.We also published the following articles recentlyLow wind speed keeps air in very poor zone for 4th dayThe air quality in Noida and Ghaziabad deteriorated marginally on Thursday, remaining very poor for the fourth consecutive day. The air quality index (AQI) in Noida was 353, Greater Noida was 336, and Ghaziabad was 361. Experts attributed the decline to meteorological factors like wind speed, direction, and temperature, as well as local factors like road dust and vehicular emissions. The SAFAR bulletin predicts that the air quality will continue to be very poor on Friday, with a possibility of some improvement on Saturday. The very poor air quality can have adverse effects on respiratory health and allergies.Delhi Pollution: AQI near severe, fifth time in NovemberDelhis air quality in November worsened to the upper end of the very poor category with an AQI of 395. This is the fifth day this month with near severe levels and the month has seen eight severe days. The wind speed briefly improved the air quality from severe to very poor. The hourly AQI readings fluctuated throughout the day, with the highest at 422 at 11am. Calm wind conditions overnight contributed to the accumulation of pollutants, while strong winds aid dispersion. Stubble burning in neighboring states remains a significant contributor to Delhis pollution levels.Delhi pollution: Air quality dips into severe category today, AQI crosses 400The air quality in Delhi worsened from very poor to severe category according to CPCB. Anand Vihar and Jahangirpuri recorded AQI of 405 and 428 respectively. Major Dhyan Chand National Stadium and Dwarka Sector 8 had AQI of 404 and 403, all falling into the severe category. On Tuesday, SAFAR-India recorded an AQI of 323. The Commission for Air Quality Management revoked restrictions in Delhi, allowing trucks, buses, and lifting the ban on construction activities.

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