Delhi Air Quality Improves: AQI at 220, GRAP-4 Revoked After Weeks of Smog

• Delhi's overall Air Quality Index (AQI) improved to 220 ('poor' category) on Thursday morning after weeks of toxic smog.
• Several areas, including Aya Nagar, CRRI Mathura Road, and IGI Airport (T3), reported 'moderate' air quality.
• The Delhi government revoked GRAP Stage-IV curbs due to improved conditions, but Stages I, II, and III remain invoked.
• Entry of non-Delhi BS-VI emission standard vehicles is now allowed; the 'No PUC certificate, No Fuel' rule continues.
• A fog warning remains in effect for Delhi and surrounding regions for Thursday morning.

Why It Matters: Delhi's air quality improved to 'poor', leading to GRAP-4 revocation, but precautions persist.