The devastating heatwave engulfing India continues to intensify, with temperatures soaring to a record-breaking 48° Celsius in Barmer, Rajasthan. This extreme weather event has not only impacted ordinary citizens but also prominent figures like Shah Rukh Khan, hospitalized due to heatstroke during a T20 match in Ahmedabad. Union Minister Nitin Gadkari also collapsed during a campaign event in Maharashtra weeks earlier.
Red Alert
Official data reveals widespread extreme heat across India, with 24 locations in Delhi, Punjab, Haryana, Rajasthan, Uttar Pradesh, Gujarat, and Madhya Pradesh registering maximum temperatures of 45°C or higher. The India Meteorological Department (IMD) has issued red alerts for several states, warning of a “very high likelihood” of heat illness and heatstroke. The situation is expected to worsen with a predicted temperature rise of three to four degrees in northwest India over the coming days.
The IMD also warns of the potential for warm night conditions to further intensify heat-related stress. High nighttime temperatures prevent the body from cooling down, leading to an increased risk of heatstroke, especially in urban areas due to the urban heat island effect.
Subdivision-wise weather warning. Image Credit: IMD
Vulnerable communities bear the brunt
While celebrities recuperate in air-conditioned hospitals, the most vulnerable populations—outdoor workers, the elderly, and children—bear the brunt of this crisis. Often lacking access to adequate shelter, hydration, and cooling mechanisms, they are disproportionately susceptible to heat-related illnesses. Health on Air has been relentlessly highlighting their stories. In the first episode of Health This Week, we take a closer look at how heat affects different sections of society. At the same time, we went into how the five-phase polls during the peak of the heatwave jeopardized the health of voters. We tried to understand whether, for voters, there is a link between climate change and heatwaves, and whether these should be election issues.
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Economic and environmental cost
This unrelenting heatwave poses significant economic repercussions. The McKinsey Global Institute predicts that India could lose up to 4.5% of its GDP by 2030 due to heat-related productivity declines. Moreover, climate change is expected to increase the frequency and intensity of heatwaves, raising concerns about long-term consequences for public health, agriculture, and the nation’s overall well-being.
The extreme heat has exacerbated existing water shortages, with the Yamuna River’s water levels plummeting. The demand for electricity has also surged to an all-time high as air conditioners and coolers work overtime, putting immense pressure on the power grid.
Health impact of heatwaves
Heatwaves pose a significant threat to human health, leading to a range of illnesses and even fatalities. Prolonged exposure to extreme heat can cause dehydration, heat cramps, heat exhaustion, and heatstroke, the most severe form of heat-related illness.
Dehydration occurs when the body loses more fluids than it takes in, leading to dizziness, fatigue, and headaches. Heat cramps are painful muscle spasms caused by electrolyte imbalance due to excessive sweating. Heat exhaustion, characterized by heavy sweating, weakness, nausea, and dizziness, can escalate to heatstroke if left untreated.
Heatstroke is a life-threatening condition where the body’s temperature regulation fails, resulting in a high body temperature, rapid pulse, confusion, and even loss of consciousness. The elderly, children, outdoor workers, and those with pre-existing health conditions are particularly vulnerable to heat-related illnesses.
The impact of heatwaves extends beyond physical health. Studies have shown that extreme heat can exacerbate mental health issues such as anxiety and depression. Additionally, heatwaves can disrupt daily life, affecting work productivity, transportation, and infrastructure.
Mitigating the risks
To mitigate the health risks of heatwaves, it is crucial to stay hydrated, seek shade, wear lightweight clothing, and avoid strenuous activities during the hottest hours. It is also essential to check on vulnerable individuals and seek medical attention if symptoms of heat-related illnesses occur.
As a safety measure, prepare an emergency kit with essentials like water, umbrellas, hats, hand towels, hand fans, and electrolyte solutions to stay safe during this scorching summer.
