Benzene levels in Mumbai saw spike during Covid-19 lockdown even as other pollutants dipped: CPCB report

Contrary to most air quality reports during the Covid-19-associated lockdown, a study showed that benzene concentration in Mumbai was higher during all phases of the lockdown as compared to levels in 2019. Mumbai The CPCB report showed 30-35% average rise in benzene levels during lockdown. “Elevated benzene levels in few areas of Mumbai are a cause for concern and need immediate investigation, especially in locations where the 24-hour averages are above the safe limits,” added Sutaria. “PM2.5 levels increased during the first lockdown phase by 5% but decreased by 9% in the second phase, as compared to levels during 2019,” the CPCB report said, explaining that from April 22 onwards the Maharashtra government revoked permissions for activities. “The larger reduction in the second phase of lockdown may be due to this fact,” said Shukla adding, “Overall, like other cities Mumbai witnessed a transitional change in air pollution levels during lockdown, bringing down air pollution and achieving background air quality.” 30% RISE IN OZONE LEVELS IN MUMBAI DURING LOCKDOWN: NCAP EXPERT MEMBER NCAP member professor Tripathi said Mumbai was among major urban cities in India that witnessed a 30% rise in ozone.