Delhi AQI Alert: From 'Very Poor' to Potential 'Severe' – Comprehensive Timeline for Better Air

Current Crisis

Delhi faces a familiar smog siege as calm winds trap pollutants, pushing AQI from 'poor' to 'very poor' across stations. Recent data shows spikes to 400+ at sites like Nehru Nagar and Wazirpur, driven by vehicles, dust, and industry amid dropping temperatures.
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Improvement Outlook

The Air Quality Early Warning System forecasts low ventilation index (3000 m²/s today, dipping to 500 m²/s on Dec 21), stalling dispersion. Relief hinges on windier conditions by Dec 22 (900m mixing depth, 3000 m²/s index).​

Key Highlights

AQI Trajectory: Overall 200-372 recently; 'severe' (>400) at 10+ stations; unhealthy PM2.5 at 123µg/m³.
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Weather Trap: Low winds, fog, cold wave (8-24°C) worsen trapping; no respite until Dec 22.
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Health Risks: Respiratory issues rise; GRAP measures active, schools online in past peaks.​

Longer-Term: 2025 shows yearly improvement (avg AQI 139 so far), but winter spikes persist.​

Stay indoors, mask up—cleaner air awaits post-Dec 21 shift.

Sources: AQI.in, IMD via Tropmet, The Hindu, India Today.