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GURGAON City air drops back to ‘poor’ after 3 days

November 21, 2019 05:37 AM

COURTESY HT NOV 21City air drops back to ‘poor’ after 3 days

Wednesday saw partly cloudy skies, which prevented the penetration of sunlight. Yogendra Kumar/HT PHOTO
HT Correspondent

htreporters@hindustantimes.com

Gurugram : After three consecutive days in the ‘moderate’ category, air quality on Wednesday dipped to settle in the ‘poor’ category of the air quality index (AQI )at 221, as per the Central Pollution Control Board’s (CPCB) bulletin on Wednesday. However, Gurugram’s AQI was the lowest in National Capital Region (NCR) for the fourth straight day.


On Tuesday, Gurugram’s AQI was 125 — the lowest so far this season, as per data with the CPCB. However, on Wednesday, as the wind speed slowed to 8kmph from 12kmph, pollutants in the atmosphere failed to disperse by a large extent.

Wednesday saw partly cloudy skies, which prevented the penetration of sunlight.

The minimum temperature on Wednesday fell to 10.8 degrees Celsius from 12.5 degrees Celsius on Tuesday, as per the India Meteorological Department (IMD). Both these meteorological conditions led to pollutants settling closer to the surface, increasing pollution levels, air quality experts said.


PM2.5 levels on Wednesday touched a maximum of 134ug/m3. On Tuesday, PM2.5 levels in the city were 90ug/m3. The 24-hour safe standard is 60ug/m3.

On Thursday, air quality is expected to dip further and touch the ‘very poor’ category on Thursday, as per the CPCB’s prediction. AQI might deteriorate to the upper end of the ‘very poor’ category or the ‘severe’ category on Friday, experts predict.

“The wind speed is likely to be weak the next two days. The minimum temperature is also likely to remain low causing smog like conditions in the mornings,” said Sachin Panwar, a city-based air quality expert.


Gurugram’s air quality has, over the last few days, been better than Delhi’s due to the direction of the wind, experts said. Manesar and Gurugram lie in the path of the wind that is blowing particulate matter away from these areas and towards the capital, they said.

On Wednesday, Manesar’s AQI was 205 (poor), as per the bulletin. On Tuesday, the area had recorded an AQI of 150 (moderate)

 
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