Delhi AQI Row: CPCB Reports 483, IQAir Crosses 1,000 | Why Do Pollution Numbers Differ? | News9

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開始：2026年11月9日 23:16　終了：2026年11月9日 23:42

Delhi's post-Diwali pollution crisis has sparked a fresh controversy over air quality data. While the Central Pollution Control Board (CPCB) recorded an AQI of 483, private monitoring platform IQAir reported readings crossing 1,000 in parts of the capital. But why are the numbers so different? India's CPCB follows its own AQI framework, with a scale of zero to 500, while private platforms may use different calculation methods and health-risk indices. Questions have also emerged over the temporary unavailability of live readings from several monitoring stations on the Delhi Pollution Control C…