After Delhi University's North Campus recorded extreme PM2.5 levels on Diwali night, data from many stations went missing. While some stations reported exorbitant pollutant concentrations, CPCB issued significantly lower figures. The discrepancies in measurements may have misrepresented the actual air quality levels in Delhi. Analysts indicated that missing data could impact overall pollution assessments and AQI calculations. DPCC claimed data was available despite technical glitches affecting the CPCB's reporting.