London residents are preparing for a significant heatwave on June 26, with temperatures forecast to reach a high of 36°C under predominantly sunny skies, necessitating precautions against the heat before a gradual cooling trend begins later in the week.Current Heatwave DetailsThe city is set to experience intense heat today with the mercury peaking at 36°C. The minimum temperature is expected to be around 21°C, resulting in an average daily temperature forecast of 28.5°C.Moderate winds, reaching up to 43.45 kph, may offer some slight cooling. Humidity levels are anticipated to be around 74%, contributing to the sensation of heat, while the chance of rain remains very low, indicated as less than 5%. The day will be sunny, with sunrise at 04:45 and sunset at 21:22.Precautions Against the HeatWith high temperatures and significant humidity, Londoners are advised to take precautions against the heat. Staying hydrated by drinking plenty of water throughout the day is highly recommended.Limiting strenuous outdoor activities during the hottest parts of the afternoon is advisable to avoid heat-related illnesses. Those planning outdoor events should consider rescheduling or making provisions for shade and cooling. Sun protection, including sunscreen and hats, should be utilized if spending extended periods outdoors due to the clear and sunny conditions.Gradual Cooling Trend ExpectedA gradual cooling trend is expected to follow the intense heat over the coming days. Tomorrow, June 27, the maximum temperature is forecast to drop to 32°C, with sunny intervals anticipated.This trend will continue into the weekend, as the maximum temperature on June 28 is predicted to be 26°C, also under sunny intervals. The latter half of the week, through June 30 and July 1, will see temperatures hovering around the mid-20s with continued sunny intervals.By July 2, the weather is predicted to become cloudier, with the maximum temperature around 25°C, indicating a more moderate weather pattern.Data referenced in this article is taken from AQI.in.