📷 Image: Wikimedia Commons / Ministry of Environment, Forest and Climate Change
Weather
Delhi’s PM2.5 Levels Plummet 61% in Just 25 Hours
✍️ Amar Ujala · Delhi
🗓 10 Nov 2026, 08:36 PM
👁 14
Air quality monitoring data shows Delhi’s PM2.5 concentration fell by 61% within a day, indicating a sharp improvement in the capital’s air quality.
Air quality officials reported that the concentration of fine particulate matter (PM2.5) in Delhi’s atmosphere dropped by 61 per cent over a 25‑hour period, according to data released by the state’s pollution control board. The measurement was taken from the network of continuous monitoring stations that track pollutants across the city.
The decline comes at a time when Delhi typically grapples with hazardous air quality during the winter months, with PM2.5 levels often exceeding the national safe limit of 60 micrograms per cubic metre. A reduction of this magnitude is expected to provide immediate health relief, especially for vulnerable groups such as children, the elderly and those with respiratory conditions.
While the report did not attribute the fall to a single cause, experts note that short‑term weather patterns—such as light rain or wind—combined with temporary reductions in traffic and industrial activity can accelerate the clearing of particulate matter from the air. Authorities will continue to monitor the trend and advise the public on protective measures.
The improvement, however, is viewed as a short‑term fluctuation rather than a permanent shift. Officials urge residents to remain vigilant, follow real‑time air quality advisories and adopt practices that limit emissions to sustain cleaner air in the long run.
The decline comes at a time when Delhi typically grapples with hazardous air quality during the winter months, with PM2.5 levels often exceeding the national safe limit of 60 micrograms per cubic metre. A reduction of this magnitude is expected to provide immediate health relief, especially for vulnerable groups such as children, the elderly and those with respiratory conditions.
While the report did not attribute the fall to a single cause, experts note that short‑term weather patterns—such as light rain or wind—combined with temporary reductions in traffic and industrial activity can accelerate the clearing of particulate matter from the air. Authorities will continue to monitor the trend and advise the public on protective measures.
The improvement, however, is viewed as a short‑term fluctuation rather than a permanent shift. Officials urge residents to remain vigilant, follow real‑time air quality advisories and adopt practices that limit emissions to sustain cleaner air in the long run.