Hyderabad: After peaking during Diwali, the pollution level dipped in the city, bringing relief to citizens. Though the air quality was seen at the unhealthy level, the quantum of particulate matter 2.5 was lower than 100 microgram/meter cube throughout the day.
At Gachibowli, the difference was most significant, noted the air quality monitoring system by CPCB.
The levels fell from over 100 microgram to 50 microgram per meter cube, cutting pollution by half. Sanath Nagar continued to peak at 80 microgram per meter cube. At Zoo Park, which is a sensitive zone, the pollution level was seen at around 68 microgram, marginally lower from Diwali.
The reason is the high background pollution by vehicular movement and industries, said Pollution Control Board officers. However, the peaking on Diwali was primarily contributed by crackers.
“During the winters the air quality is poor as the wind speed falls so the background pollution and concentration will peak,” stated Mr Veeranna, senior scientist with Telangana Pollution Control Board.