Delhi’s weather deteriorated due to a western disturbance as GRAP-4 pollution curbs continued across the capital. Over 2.12 lakh vehicles were tested for emissions, with nearly 10,000 failing PUCC norms, highlighting persistent challenges in controlling vehicular pollution during critical air quality conditions.  

Delhi has intensified its pollution-control enforcement, issuing permanent closure notices to 48 construction sites and imposing ₹7 crore in fines for regulatory violations. Minister Manjinder Sirsa said the crackdown aims to ensure strict compliance with environmental norms as the Capital battles worsening air quality.