Slight Drizzle Later In The Day Expected To Bring Some Respite After Another Hot Day In Delhi

New Delhi, heat waves, India
New Delhi witnessed heat waves in recent times

The scorching sun, high winds, and humidity are forecast to worsen the heat until a drizzle later on Tuesday brings some respite as a western disturbance begins to touch the region. The temperature is forecast to range between 43 and 45°C before becoming cloudy in the evening.

On Tuesday, the city recorded a low temperature of 29.8°C, three degrees above average, and air quality reverted to the “poor” category. At 9 a.m., the average Air Quality Index (AQI) was 217, up from 199 (moderate) at 4 p.m. on Monday.

According to the India Meteorological Department (IMD), there will be further rain starting Wednesday and a dramatic decrease in temperatures, with the mercury dropping below 40°C.

The highest temperature on Wednesday is expected to be approximately 39°C, with a low of 36°C on Thursday. On Friday and Saturday, drizzling or light rain is also forecast.

A yellow advisory has been issued for Wednesday and Thursday, advising residents to exercise care due to light rain and strong gusts. For heat, a similar advisory was issued earlier.

On Monday, five of Delhi’s 13 meteorological stations reported a top temperature of more over 45°C. At the Safdarjung base station, the temperature reached 43.7°C, the highest so far this year. The warmest stations were Najafgarh and the Sports Complex (Akshardham), with maximum temperatures reaching 46.2°C.

The Heat Index (HI) or “real feel temperature” was higher. At 2:30pm on Monday, the HI was about 51°C due to an air temperature of 42.6°C and a relative humidity of 34%. On Sunday, the high temperature was 45°C.

An HI of 26-32°C is related with weariness, 32-40°C with sunstroke, and 40-54°C with heatstroke.

IMD does not yet compute HI. It has began issuing HI-based predictions for specific stations this summer, pinpointing areas of the country most likely to be hit by a combination of high humidity and warmth.

According to IMD scientist Kuldeep Srivastava, moisture intrusion from an incoming western disturbance boosted relative humidity on Monday, making the heat wave-like conditions more unpleasant.

A heatwave happens when the maximum temperature exceeds 40°C and is 4.5 degrees Celsius or higher than average. This requirement was reached by five stations on Monday: Najafgarh and Sports Complex (46.2°C), Pusa (45.8°C), Pitampura (45.8°C), and Narela (45.3°C).

The minimum temperature soared to 27.3°C on Monday, a degree above usual. On Sunday, the temperature was 24°C.