Diwali 2022: Delhi's air quality inches closer to 'very poor' levels on Monday morning | Check AQI in NCR cities
Diwali 2022: Delhi's AQI stood at 298 at 6 am on Monday. Nineteen of the 35 monitoring stations in the city recorded air quality in the "very poor" category, while one (Anand Vihar) reported "severe" pollution levels.
Diwali 2022: Delhi's air quality inched closer to the "very poor" category on Monday morning as unfavourable meteorological conditions allowed accumulation of pollutants while emissions from firecrackers and stubble burning compounded the situation.
On Sunday evening, the city reported a 24-hour average air quality index (AQI) of 259, the lowest for the day before Diwali in seven years. However, pollution levels crept up at night amid a drop in temperature and wind speed as people burst firecrackers in several parts of the capital. The number of farm fires rose to 1,318, the highest this season so far.
AQI in NCR cities
Delhi's AQI stood at 298 at 6 am on Monday. Nineteen of the 35 monitoring stations in the city recorded air quality in the "very poor" category, while one (Anand Vihar) reported "severe" pollution levels. The neighbouring cities of Ghaziabad (300), Noida (299), Greater Noida (282), Gurugram (249) and Faridabad (248) reported poor air quality.
An AQI between zero and 50 is considered "good", 51 and 100 "satisfactory", 101 and 200 "moderate", 201 and 300 "poor", 301 and 400 "very poor", and 401 and 500 "severe". SAFAR, a forecasting agency under the Union Ministry of Earth Sciences, had earlier predicted that the air quality may deteriorate to "very poor" on Monday morning due to calm winds and low temperatures which allow rapid accumulation of pollutants in the air.
Delhi wakes up to smog covering the national capital's sky with the overall AQI (Air Quality Index) under the 'poor' category, at 276.
(Visuals from India Gate & Lodhi Road) pic.twitter.com/9ssB9ILezR
— ANI (@ANI) October 24, 2022
Delhi's air on day before Diwali least polluted in 7 years
Delhi recorded an air quality index (AQI) of 259 on Sunday, which was lowest for the day before Diwali in seven years, the Central Pollution Control Board (CPCB) data showed.
It will continue to remain "very poor" if no firecrackers are burst, it said. In case firecrackers are burst like last year, the air quality may plunge to "severe" levels on the night of Diwali and continue to remain in the "red" zone for another day, SAFAR predicted.
Diwali is being celebrated across the country on Monday. The contribution of stubble burning to Delhi's PM 2.5 pollution has so far remained low (up to 5 per cent) due to a slow transport-level wind speed. But, it is likely to increase to 8 per cent on Monday.
Gufran Beig, founder project director, SAFAR, said the transport-level wind direction and speed is likely to become "very favourable" for transport of smoke from stubble burning from Monday afternoon.
"It will increase the share of stubble burning in Delhi's PM 2.5 pollution to 15-18 per cent on October 25 and push the air quality into the 'severe' category," he said. The Indian Agricultural Research Institute reported 902 farm fires in Punjab, 217 in Haryana and 109 in Uttar Pradesh on Sunday evening.
(PTI Inputs)
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