Generally, in India, a heatwave is declared based on specific temperature ranges or deviations from standard norms. However, these traditional measurements do not adequately account for humidity. In reality, humidity intensifies the perception of heat, significantly increasing human discomfort.
As intense heatwaves continue to affect daily life in many parts of the country, including Delhi and Vidarbha, the India Meteorological Department (IMD) has introduced an 'Experimental Heat Index' to more accurately assess the impact of heat. This index is not based solely on temperature but also incorporates humidity, providing a more realistic picture of the heat actually felt.This means that the human body has been unknowingly enduring much higher levels of heat than previously perceived. The national capital, Delhi, is experiencing its first heatwave of the year, with unbearable heat conditions starting as early as 8 am. Due to the heatwave, maximum temperatures in 24 cities, including Delhi, have crossed 43°C. Sri Ganganagar in Rajasthan recorded the highest temperature at 44.5°C, while cities like Prayagraj (Uttar Pradesh) and Amravati (Maharashtra) are also among the hottest. Thus, not only global temperatures but also national temperatures are rising.
