Delhi’s winter air quality shows no consistent improvement
Quick dive
- A CREA analysis found no consistent improvement in Delhi’s winter air quality over four years despite GRAP enforcement.
- Mean winter AQI rose from 280 in 2022–23 to 304 in 2023–24, fell to 285 in 2024–25 and rose to 295 in 2025–26.
- Median AQI followed a similar pattern, moving from 294 to 324, then 289 and 305.
- Delhi remained in the poor category for a second consecutive day, highlighting the role of weather, seasonal sources and sustained emissions.
- exam_relevance: tests AQI interpretation, mean versus median, GRAP and the difference between episodic emergency restrictions and long-term source control.
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