Ground-level ozone surges in 10 major cities, presents a new urban crisis in India

Sub: Env

Sec: Pollution

Rising Ground-Level Ozone Crisis in Indian Cities:

In the summer of 2024, ground-level ozone is emerging as a significant environmental threat across Indian cities, surpassing the more familiar issue of particulate pollution.
Recent data from the Centre for Science and Environment (CSE) shows a surge in ozone concentrations in 10 major cities, including Delhi-NCR, Mumbai-MMR, Kolkata-KMA, Hyderabad, Bengaluru, Chennai, Pune, Ahmedabad, Lucknow, and Jaipur.

Formation and Health Risks of Ground-Level Ozone

Ground-level ozone is formed through reactions involving nitrogen oxides and volatile organic compounds in sunlight, originating from vehicle exhausts, industrial emissions, and natural elements.
This pollutant poses severe health risks, especially for those with respiratory conditions, children, and the elderly, by inflaming and damaging airways, exacerbating asthma, and potentially leading to chronic respiratory diseases.

Year-Round Ozone Pollution

Ground-level ozone is not just a seasonal issue; it persists year-round, with cities like Mumbai-MMR, Delhi-NCR, and Pune experiencing high ozone levels even at night. This persistent pollution highlights the need for continuous, comprehensive air quality management strategies.

Source: DTE