Air pollution had come down at nine locations in the city on September 9 when Karnataka bandh was observed against the Supreme Court order on releasing Cauvery water to Tamil Nadu.
The Karnataka State Pollution Control Board (KSPCB) had monitored the ambient air quality for the parameters particulate matter (PM10), sulphur dioxide (SO2) and nitrogen dioxide (NO2).
The KSPCB compared the values of September 9 to that of September 6, a normal working day. On September 9, the pollution had come down by 32.33% at ITPL Whitefield Road, KHB Industrial Area in Yelahanka by 80.4%, regional office Peenya Industrial Area by 36.1%, Swan Silk Private Limited in Peenya Industrial Area by 48.5%, Madhachari's house in Kaji Sonnenahalli by 17.2%, Banaswadi police station by 20.8%, Central Silk Board by 49.1%, Indira Gandhi Child Health Centre by 16.3% and Victoria Hospital by 20.3%.
However, there was an increase in air pollution at Teri office on Old Airport road by 38.3%, UVCE at KR Circle (30%), Yeshwantpur police station (44.6%), Amco Batteries on Mysuru Road (29.5%), KSPCB at SG Halli (45.9%) and City railway station (6%).