Recently, the temperature in our country has suddenly increased. The temperature has reached 40 degrees Celsius. Such a trend has been observed throughout the week. This is mainly due to heatwaves or heatstroke. A period of unusually high temperatures is called a heatwave. If the local temperature is higher than normal for a few days, it is called a heatwave. A heatwave is created when the air temperature increases excessively or in some cases, humidity increases.