Air Quality in Sejong, South Korea

Cloudy
17.3°C · 84.1% humidity
17.3°
Feels 17.3°
28
Good
Air quality is satisfactory. Enjoy outdoor activities.
13 stations

Nearby Monitoring Stations

AQI Forecast
54 9pm
34
34
28 12am
30
31
25 3am
25
33
33 6am
33
54
54 9am
54
54
54 12pm
66
66
66 3pm
66
54
66 6pm
66
66
AD 728×90

Air Quality Index Trend

45h · 39 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.

84.1%
Humidity
17.5 km/h
Wind NE
1010.5 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
28
6.7 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Sejong?

Temperature & Precipitation

PM2.5 Trend

45h · 39 stations
PM2.56.7 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
Station readings (13 stations within 25 km)
6.7
Median
7.48
Average
6.5
Low
8.6
High
PM2.5 µg/m³ · Model: 7.35 · Bias: +0.6

What is the 7-day forecast for Sejong?

09-05
28.1° 17.3°
35.06 mm
09-06
28.8° 18.9°
11.56 mm
09-07
26.9° 16.7°
2.12 mm
09-08
30.0° 17.7°
0.13 mm
09-09
27.1° 19.8°
0.13 mm
09-10
25.2° 17.2°
7.31 mm
09-11
27.8° 19.9°
0.06 mm
Both models agree Avg diff: 2.2°C

Where are air quality stations near Sejong?

28
Sinheung-dong, Sejong, South Korea (신흥동)
0.1 km PM2.5: 6.7 µg/m³
30
Sinheung-dong, Sejong, South Korea (신흥동)
0.1 km PM2.5: 7.2 µg/m³
27
Osong-eup, Chungbuk, South Korea (오송읍 충북)
5.5 km PM2.5: 6.5 µg/m³
34
Osong-eup, Chungbuk, South Korea (오송읍 충북)
5.5 km PM2.5: 8.2 µg/m³
28
Osong-eup, Chungbuk, South Korea (오송읍 충북)
5.5 km PM2.5: 6.7 µg/m³
36
Areum-dong, Sejong, South Korea (아름동)
9.8 km PM2.5: 8.6 µg/m³
31
Areum-dong, Sejong, South Korea (아름동)
9.8 km PM2.5: 7.4 µg/m³
34
Bugang-myeon, Sejong, South Korea (부강면)
10.1 km PM2.5: 8.2 µg/m³
27
Bugang-myeon, Sejong, South Korea (부강면)
10.1 km PM2.5: 6.5 µg/m³
27
Boram-dong, Sejong, South Korea (보람동)
12.5 km PM2.5: 6.5 µg/m³

What cities are near Sejong?

31 Cheongju-si 39 Gongju 31 Cheonan 30 Daejeon 31 Chinch'ŏn 28 Asan 37 Jungpyong 30 Seonghwan 31 Okcheon 50 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 2026-09-05T15:05 UTC.