In addition to this, ongoing western disturbance and low pressure systems over the Bay of Bengal led to weather advisories in 15 states in the wake of unseasonal rains and pre-monsoon snow in northern plains.
Delhi-NCR recorded its first “poor” air quality day of the season on Wednesday as a layer of smog settled over the capital, pushing the Air Quality Index (AQI) to 245.
As AQI touched the 200 mark, the Central Pollution Control Board (CPCB) and relevant state departments implemented Stage 1 of the Graded Response Action Plan (GRAP).
As the plains suffer from increasing air pollution, the mountainous regions in Uttarakhand, including Kedarnath, Badrinath, and Chamoli, along with some parts of Himachal Pradesh and Jammu & Kashmir, saw new snowfall. Cold winds : Northwesterly winds blowing from snow-capped western mountains are responsible for lowering the night temperature in Punjab, Haryana, and western Uttar Pradesh. Future fuel regulations : It has been informed by the Delhi government that from November 1, vehicles without a valid Pollution Under Control (PUC) certificate will be banned from purchasing fuel, and stringent restrictions on entry will be imposed for BS-VI non-compliant commercial vehicles. UP chilly winters : Noida, Ghaziabad, Meerut, Kanpur, and Agra had a morning chill, and Lucknow had a pleasing temperature of 31°C maximum and 18°C minimum. Central and Western India: Rain and thundershowers are expected in almost 21 districts of Madhya Pradesh and 20 districts of Rajasthan, leading to significant cooling in daytime temperature.

