Delhi's AQI touched 494 on Friday morning, with several areas recording severe pollution levels. Dense fog reduced visibility across the city, while IIT Delhi recorded an AQI of 488. AAP leader Saurabh Bharadwaj also alleged discrepancies in official pollution data, citing a CREA report. Delhi's air quality deteriorated to hazardous levels on Friday morning, with the national capital's overall Air Quality Index (AQI) reaching 403 at 8.