Delhi’s Heat Index Touches 51°C Amid High Humidity, Rain Likely to Bring Relief This Week

Delhi experienced one of its most uncomfortable weather days of the season as soaring humidity pushed the city’s “real feel” temperature to 51.3°C, despite the actual maximum temperature remaining at 41.3°C. The India Meteorological Department (IMD) has forecast rain, thunderstorms, and a gradual drop in temperatures beginning Monday.

High Humidity Makes Conditions More Uncomfortable

The capital recorded a maximum temperature of 41.3°C, around 4.1°C above normal, while the minimum settled at 30.8°C. Humidity levels fluctuated between 35% and 63%, making outdoor conditions significantly more oppressive than the air temperature alone suggested.

According to weather experts, the combination of high temperatures and moisture-laden southwesterly winds from the Arabian Sea has sharply increased the heat index, which reflects how hot it feels to the human body.

Wet-Bulb Temperature Near Critical Levels

Delhi also witnessed a peak wet-bulb temperature of 29.77°C during the afternoon. Meteorologists explain that wet-bulb temperature is a key indicator of heat stress, combining temperature and humidity to measure the body’s ability to cool itself through sweating.

Experts warn that prolonged outdoor activity becomes increasingly risky when wet-bulb temperatures approach 32°C, while 35°C is considered potentially life-threatening.

Rain and Thunderstorms Expected From Monday

The IMD has forecast rainfall accompanied by thunderstorms and gusty winds from Monday through Friday. A yellow alert has been issued for Tuesday and Wednesday as weather conditions are expected to become more active.

The maximum temperature is likely to remain between 39°C and 41°C until Monday before gradually falling to 33°C-35°C later in the week. Night temperatures are also expected to decline, with minimum temperatures forecast to reach 21°C-23°C by Friday.

Monsoon Expected to Arrive Soon

Weather experts say scattered rainfall expected by July 2 or 3 should help reduce temperatures, while the southwest monsoon is likely to advance into Delhi shortly after July 4. Until then, high humidity is expected to continue, keeping the “real feel” temperature elevated despite only a modest rise in actual air temperature.

Residents are advised to stay hydrated, avoid prolonged outdoor exposure during peak afternoon hours, and monitor official weather updates as changing conditions could bring heavy rain and thunderstorms later in the week.