Delhi Air Pollution — Environmental Laws

Entry	Year	Description	Impact
CAQM Act 2021	2021	The Commission for Air Quality Management in National Capital Region and Adjoining Areas Act, 2021, established CAQM as a statutory body replacing EPCA, with enhanced powers to coordinate air quality management across NCR states and impose penalties up to ₹1 crore for non-compliance.	Strengthened institutional framework for regional air quality management, improved inter-state coordination, and provided legal backing for emergency measures like GRAP implementation, though enforcement effectiveness remains to be fully demonstrated.
BS-VI Emission Norms	2020	Implementation of Bharat Stage VI emission norms nationwide, skipping BS-V, mandating advanced emission control technologies for vehicles and cleaner fuel standards with sulfur content reduced from 50 ppm to 10 ppm.	Significant reduction in vehicular emissions, particularly NOx and particulate matter from diesel vehicles, contributing to improved air quality in Delhi, though the full impact is still being assessed due to COVID-19 disruptions and increasing vehicle numbers.

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