Heatwave Intensifies, IMD Issues Red Alert Across India

Rising temperatures, high humidity, and climate concerns put millions at risk

New Delhi, May 18:

India is once again in the grip of a punishing summer.

A severe heatwave sweeping across large parts of the country has pushed temperatures to extreme levels, with several regions recording above 45°C, prompting the India Meteorological Department to issue red alerts.

The warning is not routine.

A red alert signals a serious threat to health and daily life, particularly for vulnerable groups such as children, the elderly, and outdoor workers.

In states like Rajasthan, Uttar Pradesh, and parts of central India, the heat has reached dangerous levels. Cities are reporting record daytime temperatures, while nighttime relief remains limited due to high minimum temperatures.

The impact is spreading eastward.

In West Bengal, including coastal and industrial regions like Haldia, the situation is slightly different—but equally concerning. Here, it is not just the temperature, but the combination of heat and humidity that is driving discomfort and health risks.

The “feels like” temperature, often higher than actual readings, is making conditions particularly oppressive.

People feel exhausted faster.

Sweat does not evaporate easily.

The body struggles to cool itself.

That is when heat stress begins.

Hospitals in several cities have reported an increase in cases related to heat exhaustion, dehydration, and heatstroke. Doctors are advising people to avoid direct sunlight during peak hours and stay hydrated throughout the day.

“This kind of heat can affect anyone, even healthy individuals,” said a physician at a government hospital in Kolkata. “We are seeing more patients complaining of dizziness, fatigue, and dehydration.”

Schools in some regions have already adjusted timings or announced early summer breaks to protect students from exposure during peak heat hours.

Construction activity and outdoor labour have also been impacted.

In many areas, work is being shifted to early mornings and late evenings. For daily wage workers, however, reducing work hours often means reduced income—highlighting the economic dimension of extreme weather.

The broader concern is climate.

Scientists have repeatedly linked the increasing frequency and intensity of heatwaves to climate change, which is altering weather patterns and making extreme events more common.

India, with its large population and diverse climate zones, is particularly vulnerable.

Urban areas face an additional challenge.

Concrete structures, limited green cover, and high vehicle emissions create urban heat islands, where temperatures remain significantly higher than surrounding rural areas.

Kolkata is one such example.

Dense construction and limited airflow in certain parts of the city trap heat, making nights uncomfortable and recovery from daytime heat difficult.

In coastal zones like Haldia, humidity adds another layer of stress.

Even if temperatures are slightly lower than northern states, the heat index—a measure combining temperature and humidity—can be equally dangerous.

Authorities are responding.

Local administrations have begun:

• Issuing public advisories on hydration and sun exposure

• Setting up water distribution points in public areas

• Monitoring hospitals for heat-related cases

• Advising employers to adjust working hours

But experts say long-term solutions are needed.

Urban planning, green cover expansion, water management, and climate adaptation strategies are becoming increasingly important as extreme heat events become more frequent.

For now, the focus remains on immediate safety.

Health officials recommend:

• Drinking water regularly, even without feeling thirsty

• Avoiding outdoor activity between 11 AM and 4 PM

• Wearing light, loose clothing

• Checking on elderly family members

• Avoiding alcohol and excessive caffeine

Because heatwaves do not always feel dramatic.

They build quietly.

Until they become dangerous.

As temperatures continue to rise, the next few days will be critical. The India Meteorological Department has indicated that conditions may persist, with only limited relief expected in some regions.

For millions across India, this is not just another summer day.

It is a test of resilience—in homes, workplaces, and cities that must adapt to a changing climate.