KOLKATA: The city's air quality index became 'severe' on the New Year's Day on morning, 10 hours after the state air pollution regulate board's computerised displays confirmed it to be 'very deficient' at nighttime.
A West Bengal Pollution Control Board (WBPCB) professional Tuesday mentioned one of the key components for the alternate in air pollution degree inside 10 hours is bursting of firecrackers to rejoice the new year.
At middle of the night when the celebrations started, the air quality index (AQI) learn 374 PM 2.5 on the air monitoring station of WBPCB at Rabindra Bharati University, one of the two computerized air monitoring stations of WBPCB in the city, a WBPCB professional mentioned Tuesday.
The AQI on the university learn 400 PM 2.5 at 10 AM Tuesday and remained the same at 11 AM, the professional mentioned.
The AQI is an indicator of air air pollution caused by way of 3 pollutants - NO2, PM 10 and PM 2.5. The index indicates air quality as 'excellent' for values of Zero-100, 'moderate' for 101 -200 and 'deficient' for 201-300.
Particles not up to 2.5 PM (micrometres) are referred to as PM 2.5. They are approximately 1/30th of the typical width of human hair and is generally described as wonderful debris. PM 10, alternatively, is particulate subject 10 micrometres or less in diameter, an professional explained.
The AQI between 301-399 is known as 'very deficient' and it reasons respiration illness on prolonged publicity, the WBPCB professional mentioned adding that it reasons respiration illness on prolonged publicity.
The reading at 400 was marked as 'severe', a notch above the very deficient and such stipulations affect even wholesome other folks, he mentioned.
The AQI at the second one computerised air monitoring station of WBPCB in the Victoria Memorial, situated in the city's inexperienced belt Maidan, learn at 365 PM 2.5 at 10 PM on Monday. It was also termed as 'very deficient', the professional mentioned.
The reading came down to 333 PM 2.5 at 11 AM, however still it remained in the 'very deficient' category.
The AQI remained 'very deficient' for most of the days in December and November.
In November, the air air pollution degree was "poor" or "very poor" in 21 of the 30 days which was extraordinary by way of any standard, Ajay Mittal of the 'Kolkata Clean Air', an environmental NGO, had mentioned.
WBPCB Chairman Kalyan Rudra mentioned the reading of 1 air monitoring station at sure point of time didn't venture all the scenario and debris also hung closely in air due to typical weather eventualities all the way through the winter.
Environmentalist S M Ghosh mentioned the air air pollution in the city reached alarming degree for the reason that past few months and putting in more computerized air monitoring stations around the city will venture how alarming all the scenario has was.
A West Bengal Pollution Control Board (WBPCB) professional Tuesday mentioned one of the key components for the alternate in air pollution degree inside 10 hours is bursting of firecrackers to rejoice the new year.
At middle of the night when the celebrations started, the air quality index (AQI) learn 374 PM 2.5 on the air monitoring station of WBPCB at Rabindra Bharati University, one of the two computerized air monitoring stations of WBPCB in the city, a WBPCB professional mentioned Tuesday.
The AQI on the university learn 400 PM 2.5 at 10 AM Tuesday and remained the same at 11 AM, the professional mentioned.
The AQI is an indicator of air air pollution caused by way of 3 pollutants - NO2, PM 10 and PM 2.5. The index indicates air quality as 'excellent' for values of Zero-100, 'moderate' for 101 -200 and 'deficient' for 201-300.
Particles not up to 2.5 PM (micrometres) are referred to as PM 2.5. They are approximately 1/30th of the typical width of human hair and is generally described as wonderful debris. PM 10, alternatively, is particulate subject 10 micrometres or less in diameter, an professional explained.
The AQI between 301-399 is known as 'very deficient' and it reasons respiration illness on prolonged publicity, the WBPCB professional mentioned adding that it reasons respiration illness on prolonged publicity.
The reading at 400 was marked as 'severe', a notch above the very deficient and such stipulations affect even wholesome other folks, he mentioned.
The AQI at the second one computerised air monitoring station of WBPCB in the Victoria Memorial, situated in the city's inexperienced belt Maidan, learn at 365 PM 2.5 at 10 PM on Monday. It was also termed as 'very deficient', the professional mentioned.
The reading came down to 333 PM 2.5 at 11 AM, however still it remained in the 'very deficient' category.
The AQI remained 'very deficient' for most of the days in December and November.
In November, the air air pollution degree was "poor" or "very poor" in 21 of the 30 days which was extraordinary by way of any standard, Ajay Mittal of the 'Kolkata Clean Air', an environmental NGO, had mentioned.
WBPCB Chairman Kalyan Rudra mentioned the reading of 1 air monitoring station at sure point of time didn't venture all the scenario and debris also hung closely in air due to typical weather eventualities all the way through the winter.
Environmentalist S M Ghosh mentioned the air air pollution in the city reached alarming degree for the reason that past few months and putting in more computerized air monitoring stations around the city will venture how alarming all the scenario has was.
Kolkata air quality 'severe' on New Year's Day
![Kolkata air quality 'severe' on New Year's Day]()
Reviewed by Kailash
on
January 02, 2019
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