Ozone Impact

World Ozone Day 2025: Why the ozone hole matters and India's plan to act

First identified in 1987, the International Day for the Preservation of the Ozone Layer is being celebrated on Tuesday, September 16, 2025, with the theme "From science to global action"

Ozone layer on track to return to 1980s levels by mid-century: WMO report

The Earth's protective ozone layer is on track to return to 1980s levels by the middle of this century, with the 2024 Antarctic ozone hole smaller than in recent years, the World Meteorological Organization (WMO) said in a new report. The WMO Ozone Bulletin 2024 said lower ozone depletion this year was partly due to natural atmospheric factors but stressed the long-term improvement reflects the success of global action. The bulletin was released on World Ozone Day, which also marked the 40th anniversary of the Vienna Convention that laid the foundation for international cooperation on ozone protection. "Forty years ago, nations came together to take the first step in protecting the ozone layer, guided by science, united in action," said UN Secretary-General Antonio Guterres. "The Vienna Convention and its Montreal Protocol became a landmark of multilateral success. Today, the ozone layer is healing. This achievement reminds us that when nations heed the warnings of science, progres

NGT issues notice to Centre over ozone levels exceeding limits in Delhi

The National Green Tribunal has sought a response from the Centre on the "feasibility and mechanism" for implementation of the CPCB's recommendations for controlling ozone levels, which were found beyond the permissible limits in some areas of the national capital. The green body earlier directed the Central Pollution Control Board (CPCB) and other agencies to submit relevant material explaining why ozone levels in these areas exceeded permissible limits. It had also sought "targeted approaches" that could be adopted for these areas. In an order dated December 23, a bench of NGT Chairperson Justice Prakash Shrivastava and expert member A Senthil Vel noted that the CPCB had submitted a report dated December 20 about the measures for control of ozone levels along with some suggestions or recommendations. The CPCB report said, "It has been recognised globally that control of ozone is only possible through control of its precursors. It is also evident that control of local sources of it

Elon Musk's Starlink satellites may cause Ozone layer harm, warns study

The study warned that SpaceX's Starlink satellites emit significant amounts of aluminium oxide gas, which leads to reactions with chlorine, ultimately destroying ozone molecules

Global emissions from banned chemicals destroying ozone layer: Study

The study noted these emissions might be reduced or avoided by reducing leakages associated with HFC production and by properly destroying any co-produced CFCs

Ozone level in Kolkata jumps 60% than normal, raises concern about health

The ozone count in central Kolkata was 60 per cent more than the safe levels, raising concerns about public health and the threat it poses to the iconic Victoria Memorial.

India to phase out ozone-harming gases by 2023; industry says ready

The Union Cabinet decided to develop a national strategy for phasing down HFCs by 2023, so that industries can draw a roadmap for action

Ozone layer depletion: Cause, effects, and solutions

On World Ozone Day, have a look at the various causes, effects and solutions of ozone layer depletion

World Ozone Day 2020: Know about Vienna Convention and importance of ozone

This year the slogan for World Ozone Day is 'Ozone For Life'

Ozone may protect the earth but poses a threat to food security: Here's how

Ozone levels have doubled since pre-industrial times due to anthropogenic emissions