Delhi’s Heatwave Drama: It’s 40°C, But Feels Like You’re in an Oven

Delhi is gripped by a relentless  heatwave, with the India Meteorological Department (IMD) predicting that the worst may still be ahead. As thermometers touch about 40–41.8°C this week, citizens are sweating under a "real feel" temperature of as high as almost 50°C—a result of a deadly combination of high humidity and unrelenting heat.

Key Highlights:

Record-Breaking "Real Feel": The maximum temperature in Delhi was 41.8°C on Tuesday, but the humidity levels were very high (between 44% and 74%) that the heat index—or "real feel"—reached a record 48.5°C. It was already 3–5°C hotter even at 40°C, and this week it was like almost 50°C in certain areas of the city.

Why It Feels Hotter: The IMD credits this suffocating heat to frequent western disturbances leading to rain and thunder showers, with a large cyclonic system over the Arabian Sea channeling moisture into Delhi. This has resulted in abnormally high humidity for May, conserving heat and creating very uncomfortable conditions outside.

Urban Heat Island Effect: Delhi’s dense urban landscape exacerbates the crisis, with concrete and asphalt retaining heat and limiting nighttime cooling. The IMD warns that high night-time temperatures prevent bodies from recovering, increasing health risks—especially for the elderly and those with existing health conditions.

More Hot Days to Come: The IMD predicts that heatwave days in northwest India, including Delhi, may double this year, with as many as 12 severe heat days on the cards. The rain that is forecast, though, will only provide transient relief. The monsoon is unlikely until end-June, so several more weeks of scorching heat.

New Forecasting Indicators: To assist the residents, IMD has improved its early warning system, now providing district forecasts and including humidity and air quality to better gauge health risks.

As Delhi’s power demand spikes and public health concerns mount, the IMD urges residents to stay alert, hydrate, and limit outdoor exposure during peak heat hours. The city’s battle with extreme weather is far from over, with authorities bracing for a prolonged, challenging summer.

Source: Economic Times, Hindustan Times, The Wire