The air quality slipped back into the “very poor” category again in Delhi on Tuesday after recording a marginal improvement.
However, the share of stubble burning in Delhi’s pollution dropped to 10 per cent during the day due to a change in the wind direction, a Central Government agency said.
Officials at the India Meteorological Department (IMD) said the air quality had improved on Monday with high wind speed aiding dispersion of pollutants.
However, stagnant night-time conditions led to accumulation of pollutants. The city recorded an air quality index (AQI) of 332 at 10 am. It improved to 302 by 4 pm as wind speed picked up.
The 24-hour average AQI was 293 on Monday which falls in the “poor” category. It was 364 on Sunday, with stubble burning contributing to 40 per cent of Delhi’s pollution.