Delhi air: After few days of marginal improvement, Delhi’s air quality slipped to ‘very poor’ category on Friday as a thick layer of smog enveloped Delhi-NCR since morning. Delhi had an overall Air Quality Index (AQI) of 303 at 6:30 am on Friday after two days of remaining ‘poor’.
According to data by SAFAR, AQI is presently at 280 in Dhirpur, 303 at IGI Airport (T3), 337 at Delhi University, 329 at Noida and 239 at Gurugram. An AQI between 201 and 300 is considered ‘poor’, 301 and 400 ‘very poor’, and 401 and 500 ‘severe’.
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Thick smog
As a thick layer of smog shrouded the national capital, Delhi International Airport Limited (DIAL) issued a passenger advisory due to low visibility.
“Low visibility procedures are in progress at Delhi airport. All flight operations are presently normal. Passengers are requested to contact the airline concerned for updated flight information,” the advisory read.
The weather department has forecast mainly clear skies during the day. The maximum temperature was expected to settle at 29 degrees Celsius.
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Authorities at the Centre’s air quality panel may take a call on revoking the curbs in Delhi-NCR under the third stage of the Graded Response Action Plan (GRAP) as air quality improves, but remains in ‘very poor’ category.
Order revoked
On Monday the Delhi government reopened primary classes from November 9 and revoked the order asking 50 per cent of its staff to work from home in view of an “improvement” in the city’s air quality over the last few days. On Thursday the Commission for Air Quality Management said it will review the air pollution situation on Friday.
All construction and demolition work, except for essential projects, is banned in Delhi-NCR under the third stage of the GRAP. The curbs were imposed when the air quality was severe in the first week of November.
PM 2.5 are fine particles that are 2.5 microns or less in diameter and can travel deep into the respiratory tract, reaching the lungs and entering the bloodstream. An AQI of above 400 is considered ‘severe’ and can badly affect healthy people .
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