Delhi air quality slips to 'very poor' day after recording 'unusual improvement'; agencies attribute it to decline in wind speed

The overall air quality index (AQI) in Delhi was recorded at 320 — in the 'very poor' category, according to data from the Central Pollution Control Board (CPCB). Anand Vihar recorded 'severe' air quality. The AQI in 23 areas was registered in the 'very poor' category, while the situation was 'poor' in 12 areas. The level of PM2.5 was recorded at 179, and the PM10 level was recorded at 338.

Press Trust of India November 26, 2018 14:06:09 IST
Delhi air quality slips to 'very poor' day after recording 'unusual improvement'; agencies attribute it to decline in wind speed

New Delhi: Delhiites woke up to a hazy morning on Monday, with monitoring stations recording air quality in the "very poor" category, a day after the city witnessed an 'unusual improvement' in the conditions, officials said.

Delhi air quality slips to very poor day after recording unusual improvement agencies attribute it to decline in wind speed

A schoolboy wearing a protective mask looks on from the inside of a school bus in delhi. Reuters

The overall air quality index (AQI) was recorded at 320 — in the "very poor" category, according to data from the Central Pollution Control Board (CPCB). Anand Vihar recorded "severe" air quality. The AQI in 23 areas was registered in the "very poor" category, while the situation was "poor" in 12 areas. The level of PM2.5 (particles in the air with a diameter of less than 2.5 micrometres) was recorded at 179, and the PM10 level was recorded at 338.

In the NCR region, Ghaziabad recorded the worst air quality with an AQI of 398. Greater Noida and Noida's air quality was registered in the "very poor" category. Faridabad and Gurgaon recorded moderate air quality, according to CPCB data.

An AQI between 0 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'. According to the Centre-run System of Air Quality and Weather Forecasting (SAFAR), Delhi's air quality will remain in the "poor" category, amid a gradual increase in the pollution level, for the next two days.

"The increase in pollution can be attributed to a decline in wind speed as compared to past two days. All other meteorological factors were already unfavourable," the SAFAR said in a report. The national capital's air quality over the weekend showed an "unusual improvement" due to late night fast wind speed, SAFAR had said on Sunday.

Updated Date:

also read

Delhi's air quality improves slightly but remains in 'very poor' category; ban on construction, demolition activities lifted
India

Delhi's air quality improves slightly but remains in 'very poor' category; ban on construction, demolition activities lifted

The Air Quality Index in the national capital is likely to improve to the 'poor' or 'lower end of very poor' category in the next two days

With 499 AQI, Delhi wakes up to 'severe' air quality; people advised to avoid outdoor activities
India

With 499 AQI, Delhi wakes up to 'severe' air quality; people advised to avoid outdoor activities

According to an analysis by Delhi Pollution Control Committee, people in Delhi breathe the worst air between 1 November and 15 November every year

Delhi's air quality remains in 'very poor' category, likely to improve tomorrow
India

Delhi's air quality remains in 'very poor' category, likely to improve tomorrow

To combat pollution, the Delhi government had on Wednesday issued 10 directions, including a ban on the entry of trucks carrying non-essential items in the city and closure of schools and colleges till further orders