Delhi Records Coolest Morning of the Month After Overnight Rainfall

New Delhi: Residents of the national capital woke up to a crisp and pleasant Sunday morning as temperatures dipped significantly following a bout of rainfall overnight. The India Meteorological Department (IMD) reported that the city experienced its lowest minimum temperature for October so far, with the mercury settling at 17 degrees Celsius—0.2 notches below the seasonal norm.

Weather Patterns and Temperature Shifts

The rainfall provided a much-needed reprieve from the lingering humidity, with the city recording 4.4 mm of precipitation in the 24-hour period ending Sunday morning. This latest spell has brought the cumulative rainfall for October to 62.3 mm. Throughout the day, the maximum temperature reached 31.1 degrees Celsius, staying slightly below the average for this time of year.

Across various weather stations in the city, the temperature variance remained consistent. While the Ridge area recorded the coolest minimum at 16.2 degrees Celsius, other pockets like Lodhi Road (16.4°C), Palam (16.7°C), and Ayanagar (17.2°C) also reported a significant dip compared to the previous week’s highs. Meteorological data shows that this cooling trend is in line with previous years, as similar low temperatures were recorded during the same period in 2024 and 2025.

Air Quality Improvement

The overnight showers had a direct impact on Delhi’s air quality, which has been a primary concern for residents. With dust and pollutants washed away, the overall Air Quality Index (AQI) stood at 153, placing it in the “moderate” category according to the Sameer app.

However, experts caution that this relief may be short-lived. Despite the current moderate status, the IMD has issued a forecast suggesting that air quality is likely to deteriorate back to the “poor” category between Monday and Wednesday. While the majority of the city breathed easier on Sunday, some areas continued to struggle; 11 out of 54 monitoring stations recorded “poor” levels, with IIT Delhi and Alipur reporting the highest concentrations of pollutants.

Looking Ahead

The meteorological office has predicted clear skies for the coming week. Temperatures are expected to remain stable, with Monday’s forecast anticipating a high of 32 degrees Celsius and a low of 16 degrees Celsius.

For context, the Central Pollution Control Board classifies an AQI between 101 and 200 as “moderate,” while readings between 201 and 300 fall into the “poor” category. Residents are advised to monitor official weather and pollution bulletins as the city transitions through the post-monsoon phase, which often brings a decline in air quality due to changing wind patterns and rising pollution levels. As humidity persists—measured at 61 per cent on Sunday evening—citizens can expect a mix of chilly mornings and warm, clear afternoons in the days ahead.

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