1 7 severe and near-severe days this Nov, highest ever
Priyangi.Agarwal New Delhi: In terms of the number of days of severe (AQI above 400) and ‘near-severe’ (AQI from 391 to 400) air quality, this was the most polluted November since the Air Quality Index was introduced in 2015. There have been 17 such days so far this month as opposed to 12 in 2021 and 11 in 2016, the two most polluted months of November in terms of average AQI. By contrast, November last year had just three such days. Although ‘near-severe’ isn’t an official category, it gained currency this month because of the high number of days when AQI was above 390 but below severe levels. There were eight such days, when a good number of city stations recorded severe air quality. We also published the following articles recently Delhi Air Pollution: Air deals 9th severe blow Of NovemberDelhi's air quality turned 'severe' on Friday due to local emissions and adverse weather conditions. The air quality index (AQI) reached 422 by 7pm, making it the ninth 'severe' day in November. The average AQI was 415. The Central Pollution Control Board reported PM2.5 levels of 231.9 micrograms per cubic meter and PM10 levels of 401.6 units. According to the Indian Institute of Tropical Meteorology, the air quality is likely to remain 'severe' on November 26, 2023.105486008 Air quality in Sanathnagarlowers as AQI soars to 203Sanathnagar in Hyderabad experiences poor air quality with an AQI of 203 and high levels of PM 2.5 and nitrate oxide. The area has consistently shown heightened pollution levels according to data from the Telangana state pollution control board. Pollution levels have been escalating since November, with a significant spike in August. Residents attribute the pollution to industrial emissions and vehicular traffic. Environmental experts call for collaboration between authorities and residents to address the issue. Measures such as planting trees, using public transport, and monitoring industrial adherence to safety protocols are suggested. The pollution control board admits the surge in AQI but cites potential interference with measurements from a nearby drugs unit.105546313 Delhi air pollution: AQI dips, but data from just 19 stationThe air quality in Delhi remained very poor on Saturday with an AQI of 389. The Central Pollution Control Board calculated the average AQI based on data from 19 active stations. In November, there were issues with AQI data, including a server outage on November 14 and an error in calculating the AQI on November 15. Sunil Dahiya from the Centre for Research on Energy and Clean Air pointed out the discrepancy in the daily bulletin, which only considered data from 19 stations. Anumita Roychowdhury from the Centre for Science and Environment emphasized the importance of consistent and reliable data for the estimation of AQI. The air quality is expected to remain very poor from November 26 to 28.
