Weather Update Post Diwali: IMD Forecasts Major Shift Across India; Heavy Rain, Fog And Cyclone Likely In These States| Check Temperatures

Weather Update Today: The IMD has indicated signs of a change in weather from today, the day after Diwali, across several parts of the country, including Delhi-NCR.

According to the India Meteorological Department (IMD), on Tuesday, October 21, 2025, Delhi-NCR is likely to record a maximum temperature of 31 Degree Celsius and a minimum of 21 Degree Celsius, with light fog expected in the morning hours.

ALSO READ: Delhi-NCR Wakes Up To Toxic Smog After Diwali Celebrations As Air Quality Turns 'Severe', AQI Hits 999 In Some Areas

A similar shift is anticipated across other major cities. Mumbai and Kolkata are expected to see highs of 36 and lows of 25 Degree Celsius , while Chennai may record a maximum of 32 Degree Celsius  and minimum of 27 Degree Celsius . In Lucknow, temperatures are likely to hover around 31 Degree Celsius  (max) and 22 Degree Celsius (min). Shimla and Srinagar will remain cooler, with maximum temperatures of 19 and 23 Degree Celsius , and minimums near 9 Degree Celsius.

In Odisha, the IMD has forecast heavy rain and thunderstorms with lightning over the next 48 hours, urging residents to remain cautious against strong winds and lightning strikes.

Additionally, a cyclone alert has been issued for the Andaman and Nicobar Islands due to cyclonic pressure over the Bay of Bengal. The system is expected to intensify by today, with heavy rainfall likely on October 23. Local ports have been put on alert, as winds between 40-50 km/h may lash the region.

Delhi AQI Recoded Severe After Diwali  

Amid the festive celebrations across the National Capital Region (NCR) and the rest of the country, Delhi woke up to a thick layer of smog and hazardous air quality. On Monday morning, the city’s Air Quality Index (AQI) plunged into the ‘severe’ category, with the average AQI touching 451, nearly twice the national safe limit.

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According to data from the Central Pollution Control Board (CPCB) and its SAMEER app, most monitoring stations in the capital remained in the ‘red zone’, indicating extremely poor air quality. Punjabi Bagh recorded an alarming AQI of 999, the highest possible level, while Narayana reported 611. Stations in Rohini and Anand Vihar reached the upper limit of 500, Central Delhi logged 409, and Noida hovered around 392, reflecting widespread toxic air conditions across the region.