Air Quality Worsens Again, Pollution 'Severe' In Many Parts Of Delhi

The concentration of ultra fine pollutants in the air increased on Monday as both PM 2.5 and PM 10 was recorded in the ‘very poor’ category

The concentration of ultra fine pollutants in the air increased on Monday as both PM 2.5 and PM 10 was recorded in the ‘very poor’ category

The concentration of PM1 (smaller than one micrometre and the most risky pollutant) was 45 microgram per cubic metre (µg/m3) in Mumbai in December 2016, against 42µg/m3 in Delhi, found the System of Air Quality Weather Forecasting and Research (SAFAR).

Play was halted between 12:32 pm to 12:49 pm on Sunday after which the umpires and match referee David Boon convinced the Sri Lankans to continue.

Researchers attributed the drop in pollution levels to high wind speed over the city because of cyclone Ockhi that passed west of Mumbai on Tuesday. The safe limit for PM2.5 and PM10 is 60 and 100 ug/m3 respectively.

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The Air Quality Index (AQI), as recorded by the Central Pollution Control Board (CPCB), also reflected the rise in the levels of these ultrafine air-borne particulates, which manage to lodge deep in the lungs and even enter the bloodstream. While Kanpur was country's most polluted city with an AQI of 371 on Wednesday. This is classified as "very poor", which comes with the warning that people may develop respiratory illness on prolonged exposure.

Yesterday's 24-hour average was 351.

An AQI between 0-50 is considered Good, 51-100 Satisfactory, 101-200 Moderate, 201-300 Poor, 301-400 Very Poor, and 401-500 Severe.

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However, nine out of Central Pollution Control Board's (CPCB) 17 stations had "severe" quality. The rest was in the "very poor" zone.

However, thanks to government efforts, the level of dust in Lucknow's air was slowly coming down but the recent increase in humidity led to a steep rise in air pollution on Wednesday. The air quality of Delhi improved by nearly 100 units with AQI 282 on Wednesday as compared to pollution levels on Tuesday when AQI was 378.

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