Air Quality in Sejong, South Korea

Partly Cloudy
21.6°C · 62.9% humidity
21.6°
Feels 21.6°
67
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
11 stations

Nearby Monitoring Stations

AQI Forecast
27 4pm
27
25
67 7pm
57
49
69 10pm
65
62
60 1am
58
57
56 4am
55
55
55 7am
55
54
27 10am
27
27
34 1pm
34
34
AD 728×90

Air Quality Index Trend

47h · 37 stn

Sejong's air quality is influenced by industrial emissions, vehicle traffic, and regional pollution transport. Winter heating season and spring dust events typically create the most challenging air quality conditions. Current PM2.5 concentration in Sejong is 1.3× the WHO 24-hour guideline of 15 µg/m³.

62.9%
Humidity
23.2 km/h
Wind WNW
1007.2 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
67
19.89 µg/m³
PM10
25
27.45 µg/m³
050100150200300500

What is the weather forecast for Sejong?

Temperature & Precipitation

PM2.5 Trend

47h · 37 stations
PM2.519.89 µg/m³ ×1.3 WHO
Moderate
PM1027.45 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
Station readings (11 stations within 25 km)
19.89
Median
20.71
Average
15.0
Low
29.7
High
PM2.5 µg/m³ · Model: 12.6 · Bias: -7.3
Both models agree Avg diff: 2.7°C

Where are air quality stations near Sejong?

70
Sinheung-dong, Sejong, South Korea (신흥동)
0.1 km PM2.5: 21.1 µg/m³
97
Sinheung-dong, Sejong, South Korea (신흥동)
0.1 km PM2.5: 34.0 µg/m³
48
Sinheung-dong, Sejong, South Korea (신흥동)
0.1 km PM2.5: 11.5 µg/m³
63
Sinheung-dong, Sejong, South Korea (신흥동)
0.1 km PM2.5: 17.8 µg/m³
122
Osong-eup, Chungbuk, South Korea (오송읍 충북)
5.5 km PM2.5: 44.0 µg/m³
13
Osong-eup, Chungbuk, South Korea (오송읍 충북)
5.5 km PM2.5: 3.1 µg/m³
63
Osong-eup, Chungbuk, South Korea (오송읍 충북)
5.5 km PM2.5: 17.8 µg/m³
56
Osong-eup, Chungbuk, South Korea (오송읍 충북)
5.5 km PM2.5: 14.5 µg/m³
34
Areum-dong, Sejong, South Korea (아름동)
9.8 km PM2.5: 8.2 µg/m³
57
Areum-dong, Sejong, South Korea (아름동)
9.8 km PM2.5: 15.0 µg/m³

What cities are near Sejong?

58 Cheongju-si 61 Gongju 62 Cheonan 54 Daejeon 69 Chinch'ŏn 62 Asan 78 Jungpyong 56 Seonghwan 54 Okcheon 52 Yesan
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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 2026-06-09T10:46 UTC.