Air quality levels drop to ‘very poor’ category in parts of Chennai, show TNPCB data
1 year, 1 month ago

Air quality levels drop to ‘very poor’ category in parts of Chennai, show TNPCB data

The Hindu  

Air quality levels on Deepavali dropped to the ‘very poor’ category in parts of Chennai, as per an analysis by the Tamil Nadu Pollution Control Board. According to the National Air Monitoring Programme’s AQI scale, the air quality check between 51 and 100 is ‘satisfactory’, 101 and 200 ‘moderate’, 201 and 300 ‘poor’, 301 and 400 ‘very poor’, and 401 and 450 ‘severe’. The Board attributed the dip in air quality to the large number of people indulging in bursting of firecrackers, mainly night crackers and sky shots, and high relative humidity and low wind speed in Chennai. Since the morning of Deepavali, the air quality steadily deteriorated from ‘moderately polluted’ to ‘poor’ and ‘very poor’, placing Chennai in the same category as Delhi.

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