Delhi air quality remains ‘poor’, AQI at 265; Anand Vihar still worst hit

An AQI betwixt zero and 50 is considered ‘good’, 51 to 100 ‘satisfactory’, 101 to 200 ‘moderate’, 201 to 300 ‘poor’, 301 to 400 ‘very poor’, and 401 to 500 ‘severe’.

On Sunday, arsenic of 11 am, the AQI was 246 successful neighbouring Ghaziabad, 145 successful Faridabad, 213 successful Gurgaon, 200 successful Noida, and 123 successful Greater Noida, according to the CPCB.

Among the 13 contamination hotspots successful the capital, the aerial prime astatine Anand Vihar presumption remained successful the ‘severe’ class with AQI astatine 424. The AQI connected the erstwhile time arsenic good had remained supra 400 during the full day. The 2nd astir polluted was Jahangirpuri astatine 352 AQI. This was followed by Wazirpur astatine 345 AQI, Mundka and Rohini astatine 324 AQI, Dwarka astatine 302, Vivek Vihar astatine 295, Narela astatine 288, Ashok Vihar astatine 284, Bawana astatine 279, Punjabi Bagh astatine 272, Rama Krishna Puram astatine 249 and Okhla 241.

The particulate substance (PM)10 was the salient pollutant successful 7 hotspots, portion PM2.5 was the salient pollutant successful the rest. According to the Centre’s Air Quality Early Warning System for Delhi, the city’s aerial prime is forecast to beryllium successful the ‘very poor’ class till Tuesday.

On the outlook for six days, it said the aerial prime volition fluctuate betwixt ‘poor’ and ‘very poor’. “Meteorological conditions are highly unfavourable for effectual dispersion of pollutants. Additional emissions from sources specified arsenic stubble/waste burning volition apt importantly deteriorate aerial quality. Control measures implemented successful contamination hotspot areas volition person a affirmative impact,” work the Air Quality and Weather Bulletin for Delhi connected Saturday.

According to the Indian Institute of Tropical Meteorology (IITM), Pune, an mean upwind velocity of little than 10 kmph is unfavourable for the dispersal of pollutants. According to the Air Quality Early Warning System bulletin, a driblet successful predominant aboveground upwind speeds is forecast.

The India Meteorological Department (IMD) has forecast a displacement successful upwind velocity from the east-southeast oregon eastbound absorption to the northbound and northwest by Thursday. Along with wide skies for the week, the Met Office has forecast calm winds connected Thursday and Friday.

“The predominant aboveground upwind is apt to beryllium coming from Southeast directions successful Delhi with upwind velocity 08-12 kmph and chiefly wide entity connected 21.10.2024. The predominant aboveground upwind volition apt beryllium coming from Southeast directions successful Delhi with upwind velocity 08-10 kmph and chiefly wide entity connected 22.10.2024.”

In the post-monsoon months successful Delhi, meteorological conditions, including somesthesia inversion and debased upwind speeds, trap pollutants adjacent to the surface, peculiarly successful the Indo-Gangetic plain, causing an aerial contamination crisis. However, section factors specified arsenic particulate and vehicular emissions successful Delhi and fume from harvest residue burning successful farms of Punjab and Haryana besides majorly lend to the deteriorating aerial prime scenario.

So far, however, according to the Decision Support System data, the workplace occurrence events contributed little than 1.2 per cent to the PM 2.5 wide publication successful the capital. On Saturday, the publication from stubble burning was 0.7 per cent.

Vehicular emissions stay a important root of aerial pollution, with the transport sector’s publication being 10.5 per cent. The pollutants from roadworthy particulate and operation activities lend astir 2 per cent. At the aforesaid time, residential areas adhd to the contamination load by 3 per cent.

According to information from the ICAR—Indian Agricultural Research Institute—on Saturday, 45 harvest residue burning events were detected by outer successful Punjab, 15 successful Haryana, 30 successful Uttar Pradesh, and nary successful Delhi. Between September 15 and October 19, 2,733 cases were reported from Punjab, Haryana, Uttar Pradesh, and Delhi, with state-wise 1393, 642, 687, and 11, respectively.

The minimum somesthesia connected Sunday was 20.3 degrees Celsius, 2 degrees supra normal. The maximum somesthesia connected the erstwhile time was 36.2 degrees Celsius, 4 degrees supra normal, and the minimum somesthesia was 19.5 degrees, said the IMD.