At 40 Degrees, Delhi Sees Hottest Day of 2025; IMD Predicts Heatwave Across North India

New Delhi, March 27, 2025: The capital city of India, Delhi, has recorded its hottest day of the year so far, with the mercury soaring to 40 degrees Celsius. This marks an unseasonably high temperature for March and has prompted the India Meteorological Department (IMD) to issue a heatwave warning across several northern states. The extreme heat has raised concerns over public health, agricultural impact, and water shortages, as experts warn of an intensifying summer ahead.

Delhi witnessed its hottest day of 2025 as temperatures soared to 40°C, signaling an early onset of extreme summer conditions. The India Meteorological Department (IMD) has issued a heatwave alert for several northern states, including Rajasthan, Haryana, Punjab, and Uttar Pradesh, as temperatures continue to rise. The sudden spike is attributed to dry westerly winds, clear skies, and the absence of pre-monsoon showers, with no immediate relief expected.

According to IMD officials, the coming days could see further temperature increases, pushing some regions into severe heatwave conditions. Experts warn that prolonged exposure to such high temperatures can lead to heat exhaustion, dehydration, and heatstroke, making it crucial for people to take precautions. Hospitals have been put on high alert, and emergency services are preparing for a potential surge in heat-related illnesses.

Authorities have advised residents to stay indoors during peak heat hours (12 PM – 4 PM), drink plenty of fluids, and wear light, breathable clothing. The Delhi government is also considering measures such as setting up temporary cooling shelters and increasing water availability at public places to help citizens cope with the extreme weather.

The IMD has indicated that the heatwave could persist for at least a week, with some possibility of relief if western disturbances bring light showers next month. However, meteorologists caution that this early heatwave could be a sign of an unusually harsh summer ahead, potentially breaking temperature records in the coming months.

Rising Temperatures Across the Region

Delhi’s maximum temperature was six degrees above normal, making it one of the hottest March days in recent years. Neighboring states like Rajasthan, Haryana, Punjab, and Uttar Pradesh also experienced intense heat, with temperatures touching 42°C in some areas.

IMD officials have attributed the sudden temperature spike to a combination of dry westerly winds, clear skies, and the absence of significant pre-monsoon activity. “The heatwave conditions are expected to intensify over the next few days, particularly in the plains of North India,” an IMD spokesperson stated.

Heatwave Alert and Health Risks

The IMD has issued a yellow alert for Delhi and several northern states, cautioning residents about heatstroke risks, dehydration, and exhaustion. The elderly, children, and individuals with pre-existing health conditions are especially vulnerable.

Unseasonal Heatwave Grips Delhi and North India

The IMD has reported that temperatures in Delhi and neighboring states, including Haryana, Punjab, Rajasthan, and Uttar Pradesh, have been climbing above normal levels over the past few weeks. The sudden rise in temperature is attributed to a prolonged dry spell and absence of western disturbances, which usually bring cooler winds and rainfall.

IMD officials have stated that this is the earliest in the year that Delhi has touched the 40-degree mark in the last decade. “The increasing trend of temperatures suggests that 2025 could witness one of the most extreme summers in recent history,” an IMD spokesperson said.

IMD Issues Heatwave Warning

The IMD has issued a heatwave alert for Delhi and other northern states, advising residents to take necessary precautions. A heatwave is declared when the maximum temperature is at least 4.5 degrees Celsius above the normal temperature for the region.

“The current atmospheric conditions indicate that temperatures will remain above normal in the coming weeks. A full-fledged heatwave is likely to set in by early April, affecting large parts of North India,” the IMD report stated.

Historical Context: A Warming Trend

Delhi has been experiencing an increasing frequency of heatwaves in recent years. In May 2024, the city recorded a record-breaking temperature of 52.9 degrees Celsius in Mungeshpur, though it was later under review for possible errors. The highest confirmed temperature in 2024 was 46.8 degrees Celsius, which was already a significant deviation from historical averages.

Meteorologists warn that climate change is exacerbating heatwaves, leading to more extreme and prolonged periods of high temperatures. “We are seeing a clear pattern of rising temperatures due to global warming. Cities like Delhi, with high levels of urbanization and pollution, are particularly vulnerable,” said climate scientist Dr. Rajiv Sharma.

Impact on Agriculture and Water Supply

The early onset of extreme heat has raised concerns among farmers, especially those in Punjab and Haryana, where wheat and other rabi crops are at a crucial stage of growth. Prolonged high temperatures can lead to heat stress, reducing crop yields and affecting food security.

Additionally, water levels in reservoirs and groundwater sources are already showing signs of depletion. Officials have warned that if the trend continues, Delhi and neighboring regions may face severe water shortages during peak summer months.

“We are closely monitoring the situation and advising farmers to take measures such as mulching and efficient irrigation to mitigate crop damage,” said an official from the Ministry of Agriculture.

Public Health Concerns and Advisory

The soaring temperatures pose a serious health risk, particularly to vulnerable groups such as children, the elderly, and individuals with pre-existing medical conditions. Cases of heatstroke, dehydration, and heat-related illnesses are expected to rise in the coming weeks.

The IMD and health authorities have issued guidelines for the public, urging people to:

• Stay indoors during peak heat hours (12 PM to 4 PM).
• Stay hydrated by drinking plenty of water and electrolyte-rich fluids.
• Avoid strenuous outdoor activities and wear light, breathable clothing.
• Use cooling methods such as fans, air conditioning, and cold showers.

Hospitals in Delhi have been put on high alert to handle potential heat-related emergencies. “We are seeing an increase in cases of heat exhaustion already, and we expect a surge if the temperatures continue to rise,” said Dr. Anjali Verma, a physician at AIIMS Delhi.

Government Response and Mitigation Plans

In response to the heatwave warnings, the Delhi government has activated its summer action plan. Measures include:

• Increasing the availability of drinking water through tankers in vulnerable areas.
• Setting up temporary cooling shelters for street workers and homeless individuals.
• Advising schools to modify schedules and reduce outdoor activities for children.
• Coordinating with health officials to ensure medical supplies for heat-related illnesses.

Authorities have also urged industries and large commercial establishments to adopt heat-reducing measures, such as green roofing and water conservation techniques.

Looking Ahead: What to Expect in Summer 2025

Weather experts predict that if current trends continue, North India could experience one of its hottest summers on record. With temperatures already reaching extreme levels in March, there is concern that the peak summer months of May and June could bring unprecedented heatwaves.

The IMD is closely monitoring weather patterns and will issue further advisories as necessary. Citizens are urged to stay informed and take all necessary precautions to protect themselves from heat-related dangers.

As climate change continues to intensify, experts emphasize the need for long-term solutions, such as urban heat management strategies, increased green cover, and investment in climate-resilient infrastructure.

With Delhi hitting 40°C, the hottest day of 2025 so far, and the IMD predicting a heatwave across North India, it’s crucial to take precautions. 

Remedies to Beat the Heatwave in Delhi & North India 🌞🔥

Personal Remedies: Stay Cool and Safe

1. Hydration & Nutrition

✅ Increase Fluid Intake – Drink 3-4 liters of water daily.
✅ Natural Coolers – Consume coconut water, buttermilk, lemon water, and ORS solutions.
✅ Fruits & Vegetables – Eat water-rich foods like watermelon, cucumber, muskmelon, tomatoes, and leafy greens.
✅ Avoid Dehydrating Foods – Minimize tea, coffee, alcohol, and high-sugar drinks.

2. Home Cooling Hacks

🏡 Block Direct Sunlight – Use dark curtains, reflective sunshades, or tinted window films.
💦 Cool Your Room Naturally –

• Place a wet bedsheet on windows to allow cool air to pass through.
• Hang a damp cloth in front of a fan for an instant cool breeze.
• Keep buckets of cold water in corners to reduce room temperature.

🚫 Turn Off Heat-Generating Appliances – Avoid using ovens, geysers, and unnecessary lights during peak heat hours.

3. Clothing & Skin Protection

👕 Wear Light & Breathable Fabrics – Prefer cotton, linen, or loose-fitting clothes.
🧢 Cover Up – Use hats, sunglasses, and light scarves to shield yourself outdoors.
🌿 Use Natural Cooling Agents – Apply sandalwood paste, aloe vera gel, or rose water to soothe the skin.
🌞 Apply Sunscreen – Use SPF 30+ to prevent sunburn.

Outdoor Protection: Survive the Heat

4. Smart Scheduling

⏳ Avoid Peak Heat Hours – Plan outdoor activities before 10 AM or after 5 PM.
🏃 Modify Workouts – Shift jogging, walking, or gym sessions to early mornings or evenings.

5. First Aid for Heat-Related Illnesses

🚑 Heat Exhaustion Symptoms: Heavy sweating, weakness, nausea.
✅ Remedy: Move to a cool place, drink ORS, and apply cold packs on wrists & neck.

🔥 Heatstroke Symptoms: High body temperature, confusion, fainting.
🚨 Emergency: Call an ambulance, sponge the person with cold water, and offer fluids if conscious.

Community & Public Measures: Collective Actions

6. Support for Daily Workers & Vulnerable Groups

👷 Provide Resting Spots – Offer shaded areas & drinking water stations for laborers.
🏠 Help Elderly & Children – Check on senior citizens & infants, as they are at high risk.

7. Government & Institutional Initiatives

🏢 Heat Action Plan – Authorities should activate cooling shelters, water kiosks, and public awareness campaigns.
🚰 Emergency Water Supply – Increase water tanker distribution in low-income areas.
🌳 More Green Spaces – Encourage tree planting and heat-resistant urban planning.

Long-Term Adaptation: Preparing for Future Heatwaves

🌱 Increase Urban Greenery – Plant rooftop gardens and trees to lower city temperatures.
🏡 Cool Roof Technology – Use white or reflective roofing materials to minimize heat absorption.
💡 Adopt Renewable Energy – Solar-powered coolers & energy-efficient buildings help combat heat.

IMD’s Heatwave Prediction – What’s Next?

IMD expects the heatwave to continue for the next few days, with relief likely only if rain or western disturbances occur. Residents are advised to stay updated on weather alerts and take necessary precautions.