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Delhi AQI stays ‘severe’ as city records season’s lowest temperature at 11.2°C

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2 hours ago

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Delhi AQI stays ‘severe’ as city records season’s lowest temperature at 11.2°C

Delhi’s 24-hour average quality was recorded at 424 (severe) at 9am on Wednesday, according to the Central Pollution Control Board.

Toxic pollutants continued to shroud Delhi in a thick blanket of smog as the air quality remained in the ‘severe’ range on Wednesday, though data showed a marginal improvement in the overall air quality index (AQI) even as the city’s minimum temperature touched a season low of 11.2°C, a degree below normal. It was 12.3°C a day earlier.

Delhi’s 24-hour average quality was recorded at 424 (severe) at 9am on Wednesday, according to the Central Pollution Control Board (CPCB). It was 460 (severe) at 4pm on Tuesday.

The AQI had touched 494 at 4pm on Monday, making it the joint-second highest AQI recorded ever in the capital. Delhi had recorded the same average AQI on November 3, 2019, while the all-time high of 497 was noted on November 6, 2016.

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Also Read | 50% Delhi government employees to work from home due to air pollution, announces Gopal Rai

Meteorological experts said fog was weakening in the region, allowing both dispersion to increase and the sunlight to penetrate through to the surface. Shallow fog was reported on Wednesday, with the lowest visibility of 500 metres recorded at Safdarjung, followed by 600 metres at Palam.

“Once again, shallow fog was reported from the capital. The thick layer of fog over northwest India has weakened,” said an IMD official. The minimum visibility on Tuesday was 600 metres at Safdarjung and 1,000 at Palam.

Though no diversions were reported at Delhi’s Indira Gandhi International airport on Wednesday, flight tracking website Flightradar24 showed 37 flights were delayed today and six had been cancelled. Northern Railways, meanwhile, reported that 13 trains were running late due to fog.

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Also Read | Understanding AQI, and if it precisely depicts worst days

If AQI persists in this range, this could be Delhi’s seventh severe air day this winter season. The national capital’s AQI first turned severe this season on November 13. Severe pollution has persisted in the region barring November 15, when the AQI went down briefly to very poor.

The CPCB classifies AQI between 0-50 as “good”, between 51 and 100 as “satisfactory”, between 101 and 200 as “moderate”, between 201 and 300 as “poor”, between 301 and 400 as “very poor”, and over 400 as “severe”.

CPCB data showed that out of the 38 operational stations, 31 were in ‘severe’ category, including Wazirpur (467) and Mundka (465). Six were in very poor and one – Lodhi Road (294) – was in ‘poor’.

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Delhi’s air quality remains in ‘very poor’ category for 14th consecutive day

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1 week ago

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November 12, 2024

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Delhi’s air quality remains in ‘very poor’ category for 14th consecutive day

Forecasts show AQI should continue to remain very poor till at least Thursday, with no significant change in meteorological conditions likely

Delhi’s air quality index (AQI) remained in the ‘very poor’ category for a 14th consecutive day as calm winds across the national Capital continued to disperse pollutants.

The average AQI of 355 (very poor) at 8am was a marginal deterioration from Monday’s 4pm reading of 352 (very poor).

Forecasts show AQI will continue to remain very poor till at least Thursday, with no significant change in meteorological conditions.

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The Central Pollution Control Board (CPCB) classifies AQI between 0-50 as “good”, between 51 and 100 as “satisfactory”, between 101 and 200 as “moderate”, between 201 and 300 as “poor”, between 301 and 400 as “very poor”, and over 400 as “severe”.

Also Read: Delhi in smog grip, AQI ‘very poor’ for 13th day in a row

The national Capital has been recording ‘smog’ conditions for the past week, the India Meteorological Department (IMD) states, adding similar smog is likely to persist in the region.

The IMD classifies it as fog when visibility is below 1,000 metres. It can be termed smog when visibility is less than 1,000 metres and the relative humidity is less than 75%.

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“Winds are remaining calm overnight, which leads to fog formation. We are seeing fog in the early hours of the day and smog for the rest of the day,” said an India Meteorological Department (IMD) official.

CPCB data showed at least five stations were in ‘severe’ category at 8am on Tuesday. This included Wazirpur (424) and Jahangirpuri (417), data showed.

Delhi’s overall AQI touched ‘very poor’ on October 30 and has stayed in this range since. It is yet to plummet to ‘severe’ this season.

Meanwhile, the minimum temperature in the capital continued to remain above normal. The minimum was 17.9°C on Tuesday — four degrees above normal and 0.7°C higher than Monday. The maximum is expected to hover around 33°C. It was 32.4°C a day earlier.

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Entertainment News Platforms – anyflix.in      
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