Delhi Gripped by Season’s First Major Cold Wave, IMD Issues Fog Alert

Delhi recorded its coldest day of the month on December 20. The maximum temperature plunged to 16.9 degrees Celsius. This was 5.3 degrees below the normal seasonal average.

The India Meteorological Department has confirmed a cold wave. They predict dense fog will blanket the city over the next several days. Morning commutes are likely to be severely disrupted.

Detailed Five-Day Forecast Points to Chilly, Foggy Mornings

According to IMD data, the cold wave and fog pattern will persist. Sunday night saw mist and shallow fog develop. Monday morning is forecast to have moderate to dense fog.

Conditions will slowly clear from Tuesday. Skies will become mainly clear. Yet, shallow to moderate morning fog will remain a daily feature through Christmas Day.

The persistent cold is worsening air quality. Delhi’s average AQI was 387 on Sunday morning. This falls into the ‘very poor’ category, according to monitoring data.

Broader Impacts: Travel Disruptions and Pollution Curbs Enforced

The combination of cold wave conditions and dense fog has significant implications. Flight and train schedules are at high risk of delays. Road travel will also become hazardous during early hours.

Authorities have activated strict pollution control measures. All actions under GRAP Stage IV are now in force across Delhi-NCR. This response aims to tackle the severe air quality that typically accompanies such temperature drops.

Residents are advised to limit outdoor activity during peak fog and pollution hours. The weather office suggests wearing warm clothing and using masks outdoors.

The ongoing Delhi cold wave marks a sharp intensification of winter. It brings familiar challenges of fog and pollution to the fore for millions.

A quick knowledge drop for you

What defines a cold wave in Delhi?

A cold wave is declared when the minimum temperature dips to 4 degrees Celsius or lower. It can also be declared when the temperature is 4.5 to 6.4 degrees below the normal.

How long is this cold spell expected to last?

IMD forecasts indicate cold wave conditions and morning fog will persist for at least the next five days. A significant rise in temperature is not expected soon.

Which areas in Delhi had the worst air quality?

CPCB data showed 19 out of 40 monitoring stations recorded AQI above 400. This placed them in the ‘severe’ category, indicating very hazardous air.

What does GRAP Stage IV mean for residents?

It enforces the strictest anti-pollution curbs. This includes a ban on most construction work and restrictions on truck entry. It may also involve further steps like odd-even vehicle rules.

Why does cold weather worsen air pollution?

Colder air is denser and traps pollutants closer to the ground. This phenomenon, called temperature inversion, prevents the dispersal of smoke and dust.