Delhi-NCR Weather Update: Rare March Fog, Coldest Day in Years, and Sudden Air Quality Improvement

Residents across Delhi-NCR woke up to a rare and unexpected sight—dense fog covering the region in late March, a time when such conditions are highly unusual. The sudden shift in weather came just a day after the national capital recorded its coldest March day in nearly six years, driven by continuous rainfall and strong winds.

This surprising weather pattern has not only lowered temperatures significantly but also brought a major improvement in air quality, offering temporary relief from pollution.

Rare Fog Covers Delhi-NCR in Late March

On Saturday morning, thick fog engulfed large parts of Delhi, Noida, Ghaziabad, and surrounding areas, reducing visibility and creating near-winter-like conditions. Such dense fog is uncommon this late in the season, making it a notable weather event.

The foggy conditions coincided with Eid al-Fitr 2026, as thousands of worshippers gathered at prominent mosques like Jama Masjid and Fatehpuri Masjid to offer namaz despite the chilly weather.

Temperature Drop: Coldest March Day Since 2020

The sudden weather change led to a sharp dip in temperatures across the region:

• Minimum Temperature: Around 13°C (3.5°C below normal)
• Maximum Temperature (Friday): 21.7°C (lowest for March since 2020)
• Expected Range (Saturday): 14°C to 27°C

The cold winds combined with continuous rainfall created conditions more typical of winter than late March.

Rainfall Brings Clean Air After 5 Months

One of the most significant impacts of this weather system has been the dramatic improvement in air quality. Thanks to continuous rainfall, Delhi’s Air Quality Index (AQI) dropped to 99, placing it in the “satisfactory” category.

This marks the first time in nearly five months (161 days) that air quality has reached this level. The last such instance was recorded on October 9, 2025.

The rain effectively washed away pollutants and dust particles, offering residents a rare breath of fresh air.

What’s Causing This Sudden Weather Change?

According to the India Meteorological Department (IMD), the unusual weather is the result of a strong Western Disturbance combined with widespread thunderstorm activity across northern India.

An IMD official, Akhil Shrivastava, noted that:

• Large-scale thunderstorms are currently active across multiple regions
• Cloudy conditions are expected to persist through the day
• More rainfall is likely in the evening and night

Weather Forecast: What Lies Ahead?

The IMD has predicted that the current weather pattern may continue for a short period:

• Saturday Night: Possibility of more rain
• Sunday: Cloudy skies with mild temperature rise
• Monday: Light rain, thunderstorms, and lightning expected

These conditions are expected to gradually stabilize, with temperatures returning to normal levels in the coming days.

Why This Weather Event Matters

This rare combination of late-season fog, unseasonal rain, and a sharp temperature drop highlights the increasing unpredictability of weather patterns. While the improved air quality is a welcome change, such fluctuations also raise concerns about climate variability.

For now, residents of Delhi-NCR are experiencing a brief but refreshing break from both heat and pollution—something rarely seen at this time of year.

Key Takeaways

• Delhi recorded its coldest March day since 2020
• Dense fog appeared unusually late in the season
• AQI improved to “satisfactory” for the first time in 5 months
• Western disturbance and thunderstorms triggered the changes
• More rain and cloudy weather expected in the coming days

As the weather continues to evolve, residents are advised to stay updated with IMD alerts and prepare for sudden changes, including rain and thunderstorms.