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Delhi's Air Pollution & AQI Calculation | Air Quality Index Explained | UPSC | Drishti IAS English

Drishti IAS : English Podcast 2 days ago

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Delhi AQI Controversy 2026: Delhi's Air Quality Index (AQI) was reported at around 370 on India's official monitoring system, while some Private Air Quality Platforms displayed readings exceeding 1,000, raising questions about Air Pollution Measurement, AQI Calculations and Public Health Risks.
Why does Delhi's AQI show 370 on one platform and 1,000 on another? Different platforms use different AQI Scales, Pollutant Concentrations, Monitoring Methods and Calculation Standards, resulting in varying readings.
Why does India's AQI stop at 500? India's National Air Quality Index, developed by the Central Pollution Control Board (CPCB), uses a 0–500 scale with six air quality categories, ranging from Good to Severe.
Can AQI exceed 1,000? Some international and private platforms use different AQI Calculation Methods, allowing readings beyond India's official scale. These figures are not directly comparable.
What causes Delhi's severe air pollution? Factors include PM2.5, PM10, Vehicular Emissions, Industrial Pollution, Firecrackers, Meteorological Conditions and Seasonal Smog.
The session also explains Air Quality Monitoring, CPCB, AQI Categories, Particulate Matter, GRAP and Pollution Control Measures.
Important for UPSC Prelims 2027, UPSC Mains GS Paper 3, Environment & Ecology, Air Pollution and Current Affairs 2026.
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