Brief by Shorts91 Newsdesk / 02:55am on 23 Oct 2025,Thursday Weather & Environment
On 22 October 2025, the national capital’s air-quality readings showed a stark contrast: CPCB reported an AQI of approximately 351, while IQAir’s measurement soared past 1,100. The explanation lies in differing methodology — CPCB’s index is capped at 500, uses reference-grade monitors and Indian standards, while IQAir draws on lower-cost sensors, global standard conversions and reports raw values beyond 500. Both readings are technically correct within their frameworks, but the discrepancy has sparked public confusion and highlights the challenge of interpreting air-quality data. (PC: NDTV)
