CPCB Explains Discrepancies and Data Gaps in Delhi's Air Quality Index Readings
Delhi's air quality readings show discrepancies between official data and private platforms, largely due to differences in measurement methodologies and equipment limits. The Central Pollution Control Board (CPCB) explained that its National Air Quality Index (NAQI), capped at 500, reflects prolonged exposure rather than momentary spikes, excluding readings above 1,000 micrograms per cubic metre as outside calibrated ranges. The CPCB is reviewing its methodology amid concerns over data gaps during extreme pollution episodes like Diwali, emphasizing the index's role as a public health communication tool.
First-hand measurement across 15 sources
We measured how 15 outlets covered this story. No outlet gave this story a measurable political slant — there is no left–right reading to report. Overall sentiment is neutral (50/100). Lens Score 57/100.
Outlets measured: moneycontrol, businessstandard, mint, thestatesman, news18, indianexpress, hindustantimes, ndtv, and 7 more. See how each one headlined and framed the same story in the source comparison below.
AI Analysis
Sentiment was consistent across outlets (45–52/100), indicating broadly factual reporting rather than editorialising.
Coverage timeline
news18 broke this story on 10 Nov, 04:48 am. Other outlets followed.