Dense Fog, Severe AQI Cripple Delhi-NCR; Flights, Trains Hit, Red Alert Issued

• Dense fog and toxic smog blanketed Delhi-NCR on Monday, pushing AQI into the 'severe' category (403 overall).
• IMD issued a 'red alert' for Delhi as visibility dropped sharply, making travel risky.
• Flight operations at Delhi airport were severely affected, running under CAT III conditions with visibility as low as 100-150m.
• Airlines like IndiGo and Air India issued advisories, warning passengers of potential delays, diversions, and cancellations.
• Train services, including Rajdhani Express and Vande Bharat, also experienced significant delays due to the dense fog.

Why It Matters: Delhi-NCR grapples with severe fog, toxic air, and major travel disruptions.