South Korea faces cloudy weekend with poor air quality, risking semiconductor supply chains.

Sunday is forecast to be mostly cloudy across South Korea. The western central coast could see rain through the morning, while inland areas including the Gangwon Province mountains may have a few showers in the afternoon.

Fine dust levels are expected to remain at a “bad” level in the central regions, with southern regions rising to the same level from the afternoon onward. This air-qualityicture matters for outdoor activity and health advisories, and it can have spillover effects for travelers and workers in outdoor industries.

Daytime temperatures are projected to range from about 10 to 16 degrees Celsius, with Seoul near 13°C. Readings are expected to be similar to yesterday, though the diurnal gap between day and night will be large.

The overall pattern suggests temperatures staying in line with seasonal norms for the near term, with notable swings between daytime highs and nighttime lows. Cloud cover and pockets of rain may continue to influence daily planning.

Sea conditions indicate waves of 0.5 to 2 meters across all coastal waters, with higher swells along the East Coast and around Jeju Island. Mariners and coastal travelers should monitor updates for potential adjustments to shore operations.

Beyond Korea, the weather and air quality matter for U.S. readers because South Korea is a major global supplier of semiconductors, automobiles, and electronics. Disruptions to manufacturing schedules or port operations can ripple through international supply chains, affecting product availability and pricing in US markets. Understanding regional weather helps businesses and policymakers gauge potential risks to imports, logistics, and energy demand.