Chennai: The air quality around the city is ‘satisfying’ in March this year and changed ‘good’ in April and May.
Intense keys, forced by the second wave of Pandemic Covid-19, caused a reduction in vehicle movements and a slight increase in air quality in Kathivakkam near Ennore, Koyambedu, and Perungudi, said the Tamil Nadu pollution control board (TNPCB) authorities.
In Manali, the quality is ‘moderate’.
Of the six locations, Chairman of the TNPCB A V Venkatachalam said, the quality of ‘moderate’ air in Manali indicates an uncomfortable breath for people with asthma conditions.
In five remaining places, the ‘satisfying level’ shows mild breathing discomfort for sensitive people.
Other officials said that even during June, when there was partial locking, the surrounding air quality had never passed the ‘good stage’ and ‘satisfying.
But, because the lock lifted in phase, the air quality returned to ‘poor’ in many regions.
Air quality monitor inspection center control air pollution control in Alandur found the PM2.5 level at 83 and 82, considered ‘moderate’, at 6pm.
In Chennai, the main contributor of pollution is emissions from the vehicle.
When the pressure from the exhaust touch the ground, resolve the dust particles, (PM2.5) from the entrance to the atmosphere and increase the level of pollution.
The researchers from IIT-M said again suspending dust from the road, emissions from vehicles, construction activities and sets of generators were responsible for poor air quality.
Vishvaja Sambath, an environmental health researcher with a healthy energy initiative, said the air quality in May was good, because of locking, although unlike in May 2020.
However, in March and June this year, it was ‘satisfying’.
TNPCB, which collects data to up to the average before declaring air quality, must collect samples of PM2.5 and PM10 levels of housing, commercial, mixed areas and industrial estates and analyze them separately to get pictures, he said.