why did the city air quality deteriorate post diwali celebrations?
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Answer:
NEW DELHI (Reuters) - Air pollution in some parts of the Indian capital deteriorated early on Monday to the worst recorded level, officials said, a day after revelers set off fireworks to mark Diwali in celebrations that were more subdued than in previous years
Answer:
Explanation:However, other major cities such as Pune, Mumbai and Ahmedabad in the western parts of the country recorded a bearable two-digit Air Quality Index (AQI).
According to the Central Pollution Control Board figures, at 11 pm, when firecracker bursting was at its peak, air quality monitors kept at Jawaharlal Nehru Stadium (JLN) in the Capital recorded an AQI of 999, so did the area around Mother Dairy in Patparganj and RK Puram.
Jahangirpuri followed close on the heels with an AQI of 758. The pollution levels were over 12 to 17 times the healthy limits during the past 24 hours. According to a press release issued by Ministry of Environment and Forests (MoEF), the Delhi government measured the levels of pollution at the 24 designated locations in Delhi on Diwali night.
“It is pertinent to note here that the pollution levels were low as compared to the Diwali nights of the previous years,” observed MoEF officials. However, around midnight the pollutant levels had hit the roof, and crossed the thousand mark.
MoEF statistics stated that on Diwali day 2019 the city average concentration (for 24 hrs) for PM 2.5 ranged from 58 micrograms per cubic metre to 1,070 micrograms per cubic metre. The levels peaked around midnight. While Najafgarh recorded the minimum levels (168), the maximum concentration was observed at Vivek Vihar (687). Last year, on the same day, average concentration for PM 2.5 ranged from 69 to 1,560 micrograms per cubic metre.
The most polluted regions among the System of Air Quality and Weather Forecasting and Research (SAFAR) monitoring stations on Monday morning were Delhi University (where AQI crossed 500) followed by Noida, the update stated.