
AI-generated summary
This article was produced by Yonhap News using artificial intelligence (AI) technology, and was desked based on data from the Korea Meteorological Administration and the reporter's final article. The Korea Meteorological Administration's weather forecast can also be checked on its website (https://www.weather.go.kr).
On Wednesday the 4th, there will be rain in the south coast of Jeollanam-do and Jeju Island starting during the day.
The expected precipitation is 10-40 mm in Gwangju and Jeonnam, 5-30 mm in Jeonbuk, 20-60 mm in the mountainous and mid-mountainous areas of Jeju Island, and 10-40 mm in Jeju Island (excluding the mountainous and mid-mountainous areas).
There will be a lot of clouds across the country, including Seoul and other metropolitan areas, but it will become cloudy starting at night, and Jeju Island will be mostly cloudy.
The daytime temperature was forecast to be 14 to 19 degrees.
The difference in temperature between day and night will be around 15 degrees, especially in the central inland region, so you should take care of your health.
As of 5 a.m. on this day, the temperature was 8.8 degrees in Seoul, 10.7 degrees in Incheon, 8.1 degrees in Suwon, 3.3 degrees in Chuncheon, 10.6 degrees in Gangneung, 8.3 degrees in Cheongju, 7.4 degrees in Daejeon, 8.8 degrees in Jeonju, 10.1 degrees in Gwangju, 16.0 degrees in Jeju, 5.8 degrees in Daegu, 11.8 degrees in Busan, and Ulsan. 8.8 degrees, Changwon 10.4 degrees, etc.
There will be thick fog with a visibility of less than 200m mainly in the inland Gangwon region, Chungcheong region, and Gyeongbuk region, and there will be fog with a visibility of less than 1km in other parts of the country.
Fine dust concentration is expected to be 'good' to 'average' across all regions due to smooth diffusion in the air.
Sea waves will rise to 0.5 to 1.0 m in the East Sea, West Sea, and South Sea. The wave height in the far inner sea (the far sea within about 200 km of the coastline) is expected to be 0.5 to 1.5 m in the East Sea and 0.5 to 2.5 m in the West and South Seas.
※ This article was produced using artificial intelligence (AI) technology. Based on the draft written by artificial intelligence and data from the Korea Meteorological Administration, the investigative reporter completed the final article and went through desking.
The Korea Meteorological Administration's weather forecast, which is the original data for the article, can also be found on the website (https://www.weather.go.kr).

Jeonbuk will have a lot of clouds on the 4th, but it will gradually become cloudy starting late at night, and rain is expected to fall in southern areas such as Jeongeup. The expected rainfall is 5 to 30 mm, and caution is needed to avoid traffic accidents due to morning fog.

Dense fog will form in Daejeon, Sejong, and South Chungcheong regions until the morning of the 4th, and thin ice may occur on roads in inland areas. The Daejeon Regional Meteorological Administration urged people to pay special attention to traffic safety.

On the afternoon of the 3rd, an accident in which 500 liters of nitric acid leaked occurred at a semiconductor parts factory in Wonsi-dong, Danwon-gu, Ansan-si, Gyeonggi-do, and six people, including factory officials, received hospital treatment. The fire department deployed 16 pieces of equipment and completed safety measures in about 4 hours.
![[Weather] The morning temperature dropped by 5 to 8 degrees compared to the previous day... Rain news in the metropolitan area](/api/img?u=https%3A%2F%2Fimg.yna.co.kr%2Fphoto%2Fyna%2FYH%2F2026%2F10%2F27%2FPYH2026102720960001300_P2.jpg&w=320&q=72&f=webp)
On Tuesday the 3rd, cold air from the northwest will move south, causing morning temperatures across the country to drop by 5 to 8 degrees compared to the previous day, and light rain will fall in the metropolitan area. The daily temperature difference is very large, around 15 degrees, especially in the inland, and there will be frost and ice in some places.

The Geumgang River Basin Environmental Office announced on the 2nd that it had downgraded the algae alert from 'warning' to 'concern' as the number of harmful blue-green algae cells in the Hoenam waters of Daecheong Lake fell below the standard level.

Bolivia declared a national emergency as damage from abnormal climate conditions such as droughts and floods caused by the El Niño phenomenon became more severe. Currently, the damage is spreading, with 78,000 households affected and 75,000 livestock dying in six states.