Winds change: Air quality set to worsen
City To Feel Effects Of Farm Fires From Next Week
New Delhi: Delhi’s wind direction has shifted to blow from the north-west and the effects from the transport of particulate matter due to stubble burning in north India could be seen in the capital soon. Delhi’s air quality had deteriorated to the ‘moderate’ category on Thursday evening with an AQI reading of 141. However, a strong spell of showers brought the air quality temporarily under control with a reading of 100 (satisfactory) recorded on Friday.
SAFAR, a forecast body under the Union ministry of earth sciences, says that gradual deterioration of air quality is expected in the next two to three days but the index should remain in the ‘moderate’ category.
“Thundershowers observed over Delhi and surrounding regions have led to a washout of pollutants and a marginal improvement of the air quality. The predominant wind direction has changed from easterly to westerly. This will lead to the transport of relatively dusty air to the region. Marginal deterioration of air quality, but in the same moderate category, is predicted for Saturday,” said SAFAR.
The long-term model of the body, however, says the effects of stubble burning are expected next week with models indicating the development of a weak anticyclone around October 6. “Though the wind direction (north-westerly), under the influence of the approaching western disturbance, is going to become favorable for the biomass plume transport, good wind speed will lead to efficient ventilation of the pollutants. A drastic deterioration is expected only in the middle of the second week of October as per SAFAR model sensitiv
forecast ➤ Direction of the wind has changed and it is now blowing from the northwest. This means effects of stubble burning in north India could soon be seen in Delhi Delhi’s AQI on Friday
Delhi’s AQI had deteriorated to ‘moderate’ on
Thursday, sudden showers on Friday temporarily
AQI THIS WEEK ity analysis,” said SAFAR.
Met officials say the effects of a retreating monsoon are also being seen in the region, which could lead to deterioration in air quality soon. “North-westerly winds generally bring particulate matter to Delhi. The impact could be more next week when wind speed reduces,” said a Met official.
Delhi’s maximum temperature was 31.4 degrees Celsius on Friday — three degrees below normal for this time of the season. Safdarjung, the base station in the capital, received 47.3mm of rainfall till 8.30am on Friday.
The regional meteorological department has forecast a spell of very light rain for Saturday with the maximum and minimum temperatures likely to be 33 and 21 degrees Celsius respectively.
helped in controlling AQI
➤ Forecast body SAFAR says air quality may deteriorate marginally in the next two days. However, AQI is expected to stay in the ‘moderate’ zone
➤ Wind speed may slow down by next week, leading to accumulation of pollutants