The recent dust storm that traversed Delhi-NCR on May 23 provided only a brief respite from the sweltering heat. The event resulted in a noticeable drop in temperatures, which fell from a high of 43.3°C. The weather phenomenon, described locally as aandhi, swept through various areas including Rafi Marg, Noida, Gurugram, Faridabad, and Ghaziabad, bringing gusts of wind reaching 60 to 80 km/h. The Indian Meteorological Department (IMD) issued an orange alert in response to the sudden weather change.

Unfortunately for residents hoping for a prolonged break from summer, this relief was temporary. According to the IMD’s latest bulletin, the cooling effect would last merely hours rather than days. The capital is now preparing for another intense heatwave, with forecasts indicating that temperatures will climb back to around 45°C by the middle of the week.

Pre-monsoon dust storms typically only provide limited cooling. The reductions in temperature, usually around 4 to 5°C, are the result of cold downdraughts from the towering cumulonimbus clouds. Following the dissipating storm, the ground quickly heats up again, and as soon as the clouds move away, the Sun resumes its role of warming the land.

Forecast for the Coming Days

The IMD’s six-day outlook suggests a return to extreme heat, with maximum temperatures expected to rise to between 44 and 45°C across Delhi and neighbouring states such as Haryana, Punjab, Rajasthan, Uttar Pradesh, and Madhya Pradesh by May 27. Consistently warm nights heighten health concerns, as individuals have little chance to recuperate in cooler temperatures.

An orange alert remains issued for approximately a week, impacting areas throughout the NCR-Delhi belt, as well as Punjab, Haryana, Uttar Pradesh, Madhya Pradesh, Vidarbha, Coastal Andhra Pradesh, and Odisha. In addition, a red alert indicating severe health risks has been declared for parts of East Uttar Pradesh, East Madhya Pradesh, and segments of Vidarbha for a duration of about three days.

Although isolated thunderstorms or further dust storm activities could be expected if a western disturbance occurs, forecasters note that no significant, long-term relief from the heat is likely until the arrival of the southwest monsoon, typically anticipated in late June.

Health Recommendations Amidst Extreme Heat

Vulnerable populations, including infants, the elderly, and those with pre-existing health conditions, are at a heightened risk during consecutive hot nighttime episodes. It is advisable to take precautions, especially following dust events when the Air Quality Index can spike; thus, the use of masks and indoor air purification is recommended.

As the city of Delhi prepares for another cycle of intense heat, it braces itself for recurring dramatic weather changes, with brief storms breaking up an otherwise long stretch of oppressive temperatures until the awaited monsoon rains arrive.

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