• Delhi NCR AQI remains severe on November 13; average 418 at 4 pm; Bawana 460, Chandani Chowk 455, Wazirpur 452, Rohini 447 (PM2.5 398 µg/m³)
• Noida AQI 306 (hazardous), Gurugram AQI 589 (PM2.5 370 µg/m³); worst air quality in 11 months, second consecutive severe day
• Temperature in Delhi NCR: 26°C max, 11°C min (below normal); shallow fog suppresses atmospheric mixing; cold conditions trap pollutants
• GRAP 3 in effect: Construction bans, BS-3/4 vehicle restrictions, schools up to Class 5 closed, Classes 6-12 hybrid mode
