Air quality improves in Patna, finally

PATNA: Patna’s air quality improved from ‘very poor’ to ‘moderate’ category on Saturday following winds, increase in temperature and light rainfall on January 8 and 9.
According to Central Pollution Control Board (CPCB), the overall air quality index (AQI) of Patna dropped from 214 to 180 in the last 24 hours. The air quality of Muzaffarpur and Gaya slightly increased to 297 and 142 on Saturday from 252 and 109 on Friday, respectively.
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A Bihar State Pollution Control Board (BSPCB) official said the overall AQI of 180 for Patna was the average of AQI level at planetarium (287), BIT-Mesra-Patna (147) and S K Memorial Hall (147).The AQI of air monitoring station at Eco Park was not available.
According to BSPCB public relations officer Birendra Kumar, the data of several pollutants, including PM 2.5 (particulate matter less than 2.5 microns), ozone and nitrogen dioxide were not available due to technical snag.
BSPCB chairman Ashok Ghosh attributed the improvement in air quality to climatic reasons, including clear sky, wind velocity and sunlight.