The Indian Meteorological Department issued an orange alert for Delhi after the city recorded unusually high temperatures this week [1, 4].
This weather pattern poses significant public health risks for millions of residents as the capital faces a severe pre-monsoon heatwave that prevents nighttime cooling.
On Wednesday, May 20, the city experienced a warm morning with a minimum temperature of 28.3°C [1]. By Friday, May 22, that minimum temperature rose to 29.3°C [2]. This trend reflects a broader spike in overnight warmth; the city recently recorded its warmest May night in 14 years [4].
Forecasters expect the heat to intensify. While some reports suggest maximum temperatures will touch 45°C [2], other data indicates the city is likely to cross 46°C [3]. The IMD said these severe conditions could persist for five days [4].
An orange alert is a specific warning level used by meteorological services to signal that the public should be prepared for hazardous weather. According to The Hindu, an ‘Orange’ alert stands for ‘be prepared’ [1].
Residents are urged to take precautions against heatstroke and dehydration. The combination of high daytime peaks and elevated nighttime minimums limits the body's ability to recover from heat stress, a condition that can exacerbate respiratory and cardiovascular issues.
Local authorities continue to monitor the situation as the heatwave continues to affect the capital and surrounding regions [3, 5].
“‘Orange’ alert stands for ‘be prepared’.”
The occurrence of the warmest May night in 14 years suggests a shift in nocturnal cooling patterns in Delhi. When minimum temperatures remain high, the human body cannot effectively shed heat accumulated during the day, increasing the risk of heat-related mortality and putting extreme pressure on the city's energy grid due to increased cooling demands.
