Unseasonably warm and humid air originating from the south is impacting Japan, leading to record-high temperatures in major cities. Both Tokyo and Osaka have registered temperatures exceeding 30 degrees Celsius, marking the latest date ever recorded for such heat. The warm air is particularly affecting areas along the Pacific coast of Japan. This late-season heat is unusual for late October and is causing concern among residents. Weather officials are monitoring the situation, as the prolonged warmth could have implications for agriculture and public health. The cause is attributed to a persistent high-pressure system.