Morning Air in Delhi Most Toxic This Winter: Residents Face Serious Health Risk
New Delhi: A new pollution trend has emerged in the national capital this winter, raising alarms for residents’ health. Analysis from think tank EnviroCatalyst shows that the highest PM2.5 levels between 1–18 November 2025 occurred from 6 a.m. to 9 a.m., coinciding with the time when children head to school and adults commute to offices.
Morning Pollution Peaks
During the 6–9 a.m. window, PM2.5 levels reached 278 µg/m³, the highest for any three-hour period of the day. The second most polluted period was 3–6 a.m., when levels hovered around 275 µg/m³. Traditionally, the worst pollution levels occurred late at night from 9 p.m. to 12 a.m., but this winter shows a distinct shift toward morning hours, when exposure is likely higher due to outdoor activities.
Historical Comparison
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