The UK is experiencing another heatwave, with forecasters predicting temperatures as high as 34°C in some areas. The Met Office says the weather pattern results from the UK being caught between two different air masses. This setup allows warm air to move into the country while other air influences remain nearby, contributing to sustained heat across parts of the UK. One explanation highlighted by scientists and forecasters is the expansion of a warm-air plume coming from Europe, which reinforces the hot conditions during the current period. The expected high temperatures indicate the heat is not isolated to a single region, but affects multiple parts of the country. As the heatwave progresses, official weather services monitor temperature developments and continue assessing how the competing air masses influence timing, intensity, and where the highest temperatures occur.