Air Quality in Seoul, South Korea

Partly Cloudy
17.4°C · 62.0% humidity
17.4°
Feels 17.4°
78
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
87 stations

Nearby Monitoring Stations

AQI Forecast
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Air Quality Index Trend

45h · 108 stn

Seoul's air quality is affected by domestic vehicle emissions, industrial activity, and transboundary fine dust from China. Spring dust events and winter heating season create the worst air quality conditions. Current PM2.5 concentration in Seoul is 1.7× the WHO 24-hour guideline of 15 µg/m³.

62.0%
Humidity
16.3 km/h
Wind E
1023.8 hPa
Pressure
0.0
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
78
24.84 µg/m³
PM10
25
27.4 µg/m³
050100150200300500

What is the weather forecast for Seoul?

Temperature & Precipitation

PM2.5 Trend

45h · 108 stations
PM2.524.84 µg/m³ ×1.7 WHO
Moderate
PM1027.4 µg/m³
Good
UV INDEX0.0
Low
Station readings (87 stations within 25 km)
24.84
Median
19.24
Average
5.3
Low
35.9
High
PM2.5 µg/m³ · Model: 13.5 · Bias: -11.3

What is the 7-day forecast for Seoul?

10-21
20.1° 16.3°
0.56 mm
10-22
22.9° 13.2°
0.81 mm
10-23
20.9° 8.9°
10-24
15.0° 13.6°
13.19 mm
10-25
20.4° 10.7°
0.06 mm
10-26
18.8° 10.4°
0.13 mm
10-27
19.1° 14.2°
Both models agree Avg diff: 5.0°C

Where are air quality stations near Seoul?

74
Seoul (서울)
0.1 km PM2.5: 23.0 µg/m³
72
Seoul (서울)
0.1 km PM2.5: 22.1 µg/m³
65
Seoul (서울)
0.1 km PM2.5: 18.8 µg/m³
82
Seoul (서울)
0.1 km PM2.5: 26.8 µg/m³
65
Seoul (서울)
0.1 km PM2.5: 18.8 µg/m³
89
Seoul (서울)
0.1 km PM2.5: 30.2 µg/m³
70
Cheonggyecheon, Seoul, South Korea (청계천로 서울)
1.8 km PM2.5: 21.1 µg/m³
55
Cheonggyecheon, Seoul, South Korea (청계천로 서울)
1.8 km PM2.5: 14.0 µg/m³
76
Cheonggyecheon, Seoul, South Korea (청계천로 서울)
1.8 km PM2.5: 24.0 µg/m³
72
Jongno-gu, Seoul, South Korea (종로구 서울)
2.4 km PM2.5: 22.1 µg/m³

What cities are near Seoul?

64 Gwangmyeong 74 Siheungdong 65 Guri-si 70 Goyang-si 69 Bucheon-si 63 Anyang-si 62 Seongnam-si 60 Hanam 64 Uijeongbu-si 54 Wabu
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Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-10-21T02:27 UTC.