Air Quality 'very poor' in Delhi; heres all you need to know

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

A lot has been said for and against this since Sunday and Gautam Gambhir added his take to all of this, taking a dig at the political leadership as he highlighted the Air Quality Index "scorecard".

Pollution is considered severe plus or emergency when readings of PM2.5 and PM10 cross 300 and 500 ug/m3 respectively.

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 corresponding prescribed standards are 60 and 100.

Humidity has risen from 44.3 per cent to 51 per cent while average temperature has dipped by about two degrees since November 27. The AQI level in the capital was recorded in the "severe" zone for seven days between November 7 and November 13.

On Wednesday, Chembur had the cleanest air in the city with AQI levels for PM2.5 at 22, while Navi Mumbai had the most polluted air with an AQI of 71. This is classified as "very poor", which comes with the warning that people may develop respiratory illness on prolonged exposure. However, it is menacingly close to the "severe" category.

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However, nine out of Central Pollution Control Board's (CPCB) 17 stations had "severe" quality. As per the lastest AQI data, Delhi's Lodhi Road area has content of prominent pollutants PM 10 and PM 2.5 in "severe" and "very poor" category respectively.

Cyclone Ockhi led to a significant drop in pollution levels in the city on Wednesday.

November witnesses extremely high levels of pollution as smoke from paddy residue burning reaches the city, aggravating the situation.

The AQI level on Wednesday fell under the "good" category, making it the cleanest air day in December since air quality monitoring began in Mumbai in 2015.

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