Delhi's Air Quality Plummets to 261 Ahead of Diwali

As Diwali approaches, Delhi's air quality index has dropped significantly, prompting the implementation of strict anti-pollution measures.

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Aapla Nagpur Desk
2 Nov 2026, 12:15 AM IST · 2 min read
Source: Hindustan Times
Delhi's Air Quality Plummets to 261 Ahead of Diwali
KEY TAKEAWAYS
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Delhi's AQI reached 261, classified as 'poor', marking a 144-point increase from the previous day.

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The city is expected to experience further deterioration, potentially reaching 'very poor' levels this week.

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New anti-pollution regulations have been enacted, including restrictions on non-BS-VI vehicles and construction activities.

In the lead-up to Diwali, Delhi's air quality has taken a sharp downturn, with the average Air Quality Index (AQI) recorded at 261, categorized as 'poor'. This figure represents a significant increase of 144 points from the previous day's AQI of 117, which was in the 'moderate' range. The Central Pollution Control Board (CPCB) reported this alarming data in its 4 PM bulletin, indicating a troubling trend as the city grapples with pollution just before the festive season.

Historically, the onset of winter in Delhi often coincides with a spike in air pollution levels due to various factors, including stubble burning in neighboring states and stagnant weather conditions. This year, the situation has been exacerbated by a lack of wind and lower temperatures, which trap pollutants close to the ground. The AQI is predicted to worsen further, with forecasts suggesting it could fall into the 'very poor' category by midweek, following a brief respite provided by recent rains.

The CPCB's data reveals a concerning trend, with the AQI worsening throughout the day, reaching 272 by 6 PM and escalating to 290 by 11 PM. Notably, 22 out of 57 monitoring stations reported 'very poor' air quality, with Jahangirpuri recording the highest AQI of 378. The primary pollutants identified were PM2.5 and PM10, which are known to have severe health implications.

The implications of this deteriorating air quality are significant for Delhi residents, especially as the city prepares for Diwali celebrations, which traditionally involve increased firecracker use. The Delhi government has enacted a winter pollution action plan, which includes measures such as restricting non-Delhi vehicles that do not meet BS-VI emission standards and halting construction activities that generate dust. These steps aim to mitigate the adverse effects of pollution on public health and the environment.

Looking ahead, the air quality outlook remains grim. The Air Quality Early Warning System (AQEWS) has indicated that the AQI is likely to remain in the 'poor' category for the next few days, with potential for further decline. Authorities are urging residents to take precautions and limit outdoor activities as the city braces for worsening air conditions in the coming days.

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