Delhi Chokes: Smog Nears 'Severe', Trains Delayed, Airport Advisory Issued

• Delhi shrouded in dense, toxic smog; overall AQI at 391 ("very poor"), many areas "severe" (e.g., Anand Vihar 445).
• Reduced visibility due to smog and fog caused delays for several trains across northern India.
• Delhi Airport issued an advisory for flyers, confirming normal operations despite the conditions.
• Authorities implemented GRAP Stage III measures and "No PUC, No Fuel" rule to combat pollution.
• Vulnerable groups advised to limit outdoor exposure due to "very poor" air quality.

Why It Matters: Delhi's air quality is "very poor" to "severe," causing disruptions and health warnings.