Air quality in Delhi will improve soon — to ‘very poor’

Experts blame crackers, low temperature for ‘severe’ quality. Delhi is the eleventh most polluted city in the world, according to the World Health Organisation.

By: Express News Service | New Delhi | Updated: November 1, 2016 11:31 am
air pollution, diwali, diwali pollution, delhi smog, smog in delhi, smog, air pollution after diwali, pollution level, rising air pollution, diwali pollution, pm 2.5, pm 10, particulate matter, delhi air pollution, lucknow air pollution, ahmedabad air pollution, diwali pollution, firecracker pollution, india news, indian express news Both PM 2.5 and PM 10 levels spiked in the city once people started bursting crackers on Sunday evening. (Express Photo: Praveen Khanna)

Pollution levels in Delhi, which remained choked with toxic air on Monday, will start improving only on Wednesday.

According to System of Air Quality and Weather Forecasting and Research (SAFAR), Delhi’s air will remain in the ‘severe’ range on Tuesday and will improve — to ‘very poor’ — on Wednesday with an increase in wind speed.

WATCH: Delhi’s Air Quality Likely To Improve Only After Two Days: Here’s Why

 

A mix of Diwali crackers, high humidity, low temperature and low wind speed in Delhi meant that pollutants got accumulated in the air. A relatively high wind speed dispersed pollutants, but it has been in the range of 0.3 metres per second and 2 metres per second since Saturday. Usually, it is between 2 metres per second and 4 metres per second in the capital.

air pollution, diwali, diwali pollution, delhi smog, smog in delhi, smog, air pollution after diwali, pollution level, rising air pollution, diwali pollution, pm 2.5, pm 10, particulate matter, delhi air pollution, lucknow air pollution, ahmedabad air pollution, diwali pollution, firecracker pollution, india news, indian express news Post Diwali pollution: Data showing particulate matter in the air which helps in determining air quality index. (Source: http://aqicn.org/)

According to a statement issued by the Delhi government, the level of pollutants spiked on Diwali. “The major changes (in air quality) were observed after 7 pm, when fireworks started. Ambient air quality in Delhi was already saturated with pollutants accumulated due to trans-state movement of pollutants. The cumulative effect of existing pollution load and pollutants’ release due to fireworks, as well as adverse meteorological conditions, led to the present situation,” the statement read.

On Monday, all stations across the city saw air quality drop down to ‘severe’ levels. The National Air Quality Index reported pollution levels at 500, the highest it can go at all seven stations that measure particulate matter (PM). Any reading between 400 and 500 on the National Air Quality Index means the air is severely polluted.

The primary pollutants at all stations were particulate matter, which is caused by burning, vehicular emissions and industrial pollutants.

The US embassy’s monitoring station showed the air quality reading at a high 999 between Sunday evening and Monday evening.

air pollution, diwali, diwali pollution, delhi smog, smog in delhi, smog, air pollution after diwali, pollution level, rising air pollution, diwali pollution, pm 2.5, pm 10, particulate matter, delhi air pollution, lucknow air pollution, ahmedabad air pollution, diwali pollution, firecracker pollution, india news, indian express newsAir pollution: Data showing particulate matter levels in different cities across India. (Source: http://aqicn.org/)

According to the Delhi Pollution Control Committee (DPCC) stations, the PM .5 levels at Punjabi Bagh reached a high of 678 micrograms per cubic metre at 2 am on Monday. By 5.30 pm, it had dropped to 124 micrograms per cubic metre but the air quality will take time to improve. The PM 10 level rose to 1,560 micrograms per cubic metre at 2 am.

At R K Puram, PM 2.5 was 748 micrograms per cubic metre while the PM 10 levels were 1,400 micrograms per cubic metre at 2 am. The standard for PM 2.5 and PM 10 is 60 and 100 micrograms per cubic metre respectively. “Emissions caused by crackers added to already high PM 2.5 levels in the city. Levels were higher than last year… due to outside contributions from agricultural burning. Lower wind speed and shallow inversion layer can lead to extremely high pollutant concentrations in winters. A regional, multi-sectoral air quality management plan is required for NCR,” said Sumit Sharma, Fellow, The Energy and Resources Institute.

At a meeting headed by Environment Minister Imrain Hussain, experts attributed high levels of pollution to adverse weather conditions and agricultural burning in neighbouring states. The Ministry of Environment, Forest and Climate Change also reviewed the ambient air quality status of Delhi.

Delhi is the eleventh most polluted city in the world, according to the World Health Organisation. The city has not seen a single good air-quality day since September.

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First Published on: November 1, 2016 3:19 am
  1. J
    John Joseph
    Nov 1, 2016 at 3:55 am
    Indian express please tell me who wrote this article and why this person is being anti Hindu. Delhi is the most polluted city in the world and the problem is the cars, lifestyle of you guys not crackers. This is like saying we should ban Christmas to save trees or ban Hujj to save on air pollution.
    Reply
    1. J
      Jaljeera
      Nov 1, 2016 at 3:40 am
      क्या मुसलमान व ईसाई पटाख़े नहीं फोड़ते, तो दिक्क़त सिर्फ हिंदु धुएँ से ही क्यों ? दिवाली का धुआँ पूर्ण रूप से हिन्दू है और इसका फैसला हिंदुओं पर छोड़ा जाना चाहिए ।
      Reply
      1. T
        T DUTTA
        Nov 1, 2016 at 4:27 am
        ODD-EVEN FORMULA ROUND THE CORNER?
        Reply
        1. T
          T DUTTA
          Nov 1, 2016 at 4:28 am
          SHOULD THE CAPITAL OF THE COUNTRY BE CHANGED BECAUSE OF POLLUTION?
          Reply
          1. R
            Raj
            Nov 1, 2016 at 6:06 am
            Delhi is a joke. Rather, Delhi is a choke. lt;br/gt;A veritable vacuum pump sucking in all the filthy air from Punjab-Haryana, UP, and MP.lt;br/gt;.
            Reply
            1. G
              Guest
              Nov 1, 2016 at 3:20 am
              The reason is chinese crackers, which should have been avoided by people at all costs.
              Reply
              1. V
                Vinod Yadav
                Nov 7, 2016 at 5:04 am
                Long tum salutation of Air Pollution is must be purple aware the Environment all type pollution and all purple self do it conserve the our environment.
                Reply
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