Vietnam is currently enjoying a clear early autumn weather pattern, with daytime temperatures expected to range between 25 and 30 degrees Celsius. Cities such as Seoul, Daejeon, Sejong, and Ulsan will see highs around 27 degrees, while Daegu may reach 29 degrees and Gwangju could hit 30 degrees.

However, residents should be aware of significant temperature fluctuations, particularly in inland areas, where the difference between daytime and nighttime temperatures can be as much as 10 to 15 degrees. For instance, nighttime temperatures may drop to as low as 12 degrees, while daytime highs could reach up to 31 degrees.

Looking ahead, tomorrow's weather is expected to mirror today's, with morning temperatures ranging from 12 to 21 degrees and afternoon highs between 23 and 31 degrees, consistent with seasonal averages. The day will start with some cloud cover, particularly in the northern regions, and light rain may occur in areas including Seoul, Incheon, and parts of Gangwon Province.

Additionally, the mountainous regions of Jeju may experience rainfall of 5 to 10 millimeters from the afternoon into the evening. Travelers and commuters are advised to exercise caution due to fog in parts of Gangwon, South Jeolla, North Gyeongsang, and South Gyeongsang.

Air quality across the country is reported to be generally good, ranging from good to moderate levels.