Fight against pollution: India to revise AQI standards, focus on PM1

Nursery Today    06-Jun-2025
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New Delhi: India has been planning to brush up its Air Quality Index (AQI) standards for the first time since their introduction in 2015. This move is likely to help in the fight against pollution all over the country, including Delhi NCR. Currently, rising pollution levels are a big issue for all, and everyone is affected due to poor air quality. Numerous diseases are emerging amid rising pollution.
 

Currently, AQI is calculated using eight key pollutants: PM 2.5, PM 10, carbon monoxide (CO), nitrogen dioxide (NO₂), sulfur dioxide (SO₂), ammonia (NH₃), lead (Pb), and ozone (O₃). However, environmental experts believe that these indicators are now outdated due to changing environmental conditions.

Experts believe that it is not possible to do online monitoring of lead on a regular basis while the limits of SO₂ and ammonia are under control. As per the experts, PM2.5 is still a dangerous pollutant, but the time has come to concentrate on finer particles such as PM1, which are affecting human health.

 

The Central Pollution Control Board (CPCB), in collaboration with IIT Kanpur, has prepared a blueprint to unveil these changes. On the basis of this study, currently, the Ministry of Environment, Forest, and Climate Change has been assessing the planned changes at a high level. As per the officials' new AQI standards to be finalized in the coming time, officials will be notified soon. This would be a major change in the measurement and tackling of air pollution across the country.

 
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