HYDERABAD: The city saw bad air for 98 days during the winter of 2021, according to a study by Centre for Science and Environment (CSE).
CSE’s analysis of pollution data showed a rising trend in the annual particulate matter (PM) 2.5 level in 2021 after a significant drop in 2020, which had more pandemic-related lockdown phases. Hyderabad’s 2021’s annual average of PM 2.5 stood at 41 ug/m3, making it third highest compared to other cities in south India after Visakhapatnam’s annual average of 44 ug/m3.