The Centre for Science and Environment (CSE) has issued an alert on rising ozone pollution and multi-pollutant crisis in the national capital on World Environment Day 2023 (June 5).
Highlights of the CSE analysis: Ground-level ozone usually exceeds the safety standard (50 ppb over an 8-hour average) on all summer days in some locations in Delhi-NCR every year. Ground-level ozone, which should ideally become negligible in the night air, remains a problem at night too in the Delhi-NCR region. Even winter months (winter can inhibit the formation of ground-level ozone) in Delhi-NCR face excess ozone levels, making it an all-year problem.
