Transboundary PM2.5 Pollution Delhi Punjab — UPPSC current affairs 21 August 2026

A study highlighted the contribution of transboundary air pollution from neighboring regions to annual fine particulate matter levels in Delhi and Punjab.
The findings emphasize that regional airshed management is necessary alongside hyper-local municipal source mitigation.

Research indicates that transboundary air pollution originating outside domestic borders contributes up to 33% of Delhi's annual PM2.5 levels and 40% of Punjab's PM2.5 burden.
Air pollutants travel across political boundaries due to atmospheric transport, seasonal wind patterns, and geographical features of the Indo-Gangetic Plain.
Key emission sources in the common airshed include agricultural residue burning, inefficient biomass domestic cooking, and industrial emissions.
Effective air quality control requires an airshed management approach rather than isolated administrative boundary interventions.
The Commission for Air Quality Management was instituted by Parliament to coordinate mitigation across the National Capital Region and adjoining areas.

PM2.5

Fine particulate matter measuring 2.5 micrometers or smaller in diameter, capable of penetrating deep into lungs and bloodstream.

Airshed

A geographic area that shares the same flow of air and atmospheric circulation, causing common air pollution patterns.

The Commission for Air Quality Management has jurisdiction over NCR and adjoining areas in Punjab, Haryana, Rajasthan, and Uttar Pradesh.
PM2.5 is one of the eight pollutants monitored under the National Air Quality Index.

Discuss the significance of adopting an airshed management framework to address persistent air pollution in the Indo-Gangetic Plain.
Examine the challenges in cross-border and inter-state regulatory coordination for environmental governance.

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