Overview
- Central Pollution Control Board data show Delhi’s AQI eased from 309 on Nov. 3 to 291 on Nov. 4 due to stronger winds, though several stations still registered very poor readings.
- The Delhi government said Nov. 4 was the city’s best for that date in seven years and cited stepped‑up enforcement, including about 7,580 vehicular challans, extensive road sweeping, and wide deployment of anti‑smog measures.
- CREA’s October snapshot ranked Dharuhera the most polluted city with average PM2.5 at 123 µg/m³ and placed Delhi sixth at 107 µg/m³, reflecting a sharp deterioration focused in the Indo‑Gangetic Plain.
- CREA estimated stubble burning contributed under 6% to Delhi’s October PM2.5, pointing to dominant local sources and the limits of short seasonal responses like GRAP.
- Forecasts indicate air quality is likely to slip back to very poor from Wednesday to Friday, keeping health risks elevated for children, older adults, and people with heart or lung disease.