Delhi has rolled back the strictest pollution curbs under the Graded Response Action Plan (GRAP-4) after a week of severe restrictions, following a noticeable improvement in the city’s air quality.
The Commission for Air Quality Management (CAQM) confirmed that the Air Quality Index (AQI) dropped to 271 on Wednesday, placing it in the “poor” category, compared to the “severe-plus” levels above 450 that triggered GRAP-4.
Officials attributed the improvement to strong winds and favourable meteorological conditions that helped disperse pollutants. However, forecasts from the India Meteorological Department (IMD) and IITM warn of slower winds in the coming days, which could push AQI levels back up.
With GRAP-4 lifted, older vehicles that were temporarily banned can return to Delhi’s roads. Still, only Bharat Stage (BS)-6 compliant vehicles from outside Delhi are permitted entry during GRAP-3 and GRAP-4 phases.
Vehicles lacking valid Pollution Under Control (PUC) certificates remain barred from refuelling at petrol stations. Experts estimate vehicular emissions contribute up to 40% of particulate pollution in the NCR, particularly during winter when smog lingers close to the ground.
Schools that were mandated to operate in hybrid mode until Class 11 during GRAP-4 can now resume normal schedules. Offices, which had enforced 50% work-from-home policies, are also returning to regular operations.
Authorities emphasise that while restrictions have eased, vigilance remains crucial. The CAQM continues to enforce GRAP-1 to GRAP-3 measures to safeguard public health and prevent a relapse into hazardous conditions.
