IMD Heatwave Alert: Western UP and Delhi Temperatures Touch 46°C—Check Peak Danger Hours and Outdoor Work Rules

The Indian Meteorological Department (IMD) has issued a warning of extreme heat conditions because the temperatures are close to 46 degrees Celsius (C) in much of Delhi and western Uttar Pradesh. Authorities and health experts are advising that prolonged exposure to the sun during the hottest hours of the day can be dangerous for construction workers, delivery personnel, traffic staff, farmers, and people being paid daily.

Why the Heatwave Is Becoming Dangerous

Meteorologists are investigating reports that the high-pressure system blankets North India with extreme amounts of heat and creates a trap for all of that hot air on the ground, causing temperatures to rise indefinitely. Multiple weather conditions contribute to the ongoing extreme heat.

• Intense sunlight,
• Very low humidity during dry periods, 
• Very little cloud cover, 

Urbanisation that allows for large amounts of heat retention (eg., roads, buildings, vehicles, concrete) in cities during the day, resulting in a high level of heat that is released from these structures through the night, creating high levels of nighttime heat that create heat-related illness to vary degrees during extreme heat.

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Why Cities Feel Even Hotter

Cities throughout India will continue to experience the “urban heat island effect” because there are additional surfaces, such as roads, buildings, and vehicles, that will continue to attract, retain, and release greater amounts of heat over long periods of time, even after the sun goes down. 

As a result, the prolonged extreme heat will continue to expose urban residents to higher temperatures during the day and a lower amount of cooler night-time temperatures, preventing urban residents from using their daily rest and recovery periods as an additional mechanism for coping with prolonged extreme heat.

Final Words

Health risks for millions rise, to 46 degrees Celsius; experts say awareness of the situation, drinking enough fluids, and staying out of the heat during peak hours could soon be as critical to survival as out of consideration.

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