According to the data released by the Central Pollution Control Board, Delhi's air quality index AQI was recorded in the'very poor' category on Saturday morning. It is expected to improve from November 29 onwards due to high wind speed.
Local surface winds are likely to increase slightly over the next two days, dispersing pollutants and leading to a slight improvement in air pollution, but the AQI will be in the higher end of the very poor category, officials said.
The share of stubble burning in Delhi's PM 2.5 pollution was 8%.
Mixing layer height and wind are the dominant factors that affect air quality. The Ministry of Earth SciencesEarth Sciences' air quality monitor SAFAR said on Friday that significant improvement in AQI is expected due to high wind speed from November 29.
The AQI of Delhi was recorded at 407 around 9 am on Saturday. The corresponding figures for Faridabad, Ghaziabad, Gurugram and Noida were 434, 376, 378 and 392 respectively.
On most days in November the air quality in the national capital has remained in the'very poor' or'severe' category.
Delhi had its lowest air pollution levels of the month in terms of the 24 hour average quality index on November 1 AQI 281 and November 23 AQI 290 An AQI between zero and 50 is considered good, 51 and 100'satisfactory', 101 and 200'moderate', 301 and 400'very poor' and 401 and 500'severe'.
On Saturday, the minimum temperature in the national capital was at 10.2 Celsius, normal for this time of the year. The India Meteorological Department said that the relative humidity at 8.30 am was 95%.
The maximum temperature is likely to settle around 27 Celsius, and the weatherman has predicted clear skies throughout the day.