Air Quality in Sejong, South Korea

Drizzle
25.6°C · 84.2% humidity
25.6°
Feels 25.6°
46
Good
Air quality is satisfactory. Enjoy outdoor activities.
7 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
24 5am
22
22
46 8am
40
35
30 11am
28
26
25 2pm
24
24
23 5pm
23
23
21 8pm
21
21
22 11pm
22
24
24 2am
24
24
Station readings 45h ago
AQI 31
PM2.5 7.5 µg/m³ · 45h ago
AD 728×90

Air Quality Index Trend

44h · 30 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.

84.2%
Humidity
8.2 km/h
Wind E
1005.2 hPa
Pressure
1.4
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
46
11.0 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Sejong?

Temperature & Precipitation

PM2.5 Trend

44h · 30 stations
PM2.511.0 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX1.4
Low
AD 300×250
Station readings (7 stations within 25 km)
11.0
Median
11.07
Average
7.2
Low
13.1
High
PM2.5 µg/m³ · Model: 6.0 · Bias: -5.0

What is the 7-day forecast for Sejong?

08-03
31.8° 25.4°
1.81 mm
08-04
30.2° 24.5°
3.06 mm
08-05
28.2° 20.2°
0.88 mm
08-06
32.6° 22.2°
0.13 mm
08-07
33.2° 21.3°
0.25 mm
08-08
34.8° 22.2°
08-09
31.4° 23.0°
0.56 mm
Both models agree Avg diff: 4.9°C

Where are air quality stations near Sejong?

50
Sinheung-dong, Sejong, South Korea (신흥동)
0.1 km PM2.5: 12.0 µg/m³
44
Sinheung-dong, Sejong, South Korea (신흥동)
0.1 km PM2.5: 10.6 µg/m³
42
Sinheung-dong, Sejong, South Korea (신흥동)
0.1 km PM2.5: 10.1 µg/m³
25
Sinheung-dong, Sejong, South Korea (신흥동)
0.1 km PM2.5: 6.0 µg/m³
30
Osong-eup, Chungbuk, South Korea (오송읍 충북)
5.5 km PM2.5: 7.2 µg/m³
38
Osong-eup, Chungbuk, South Korea (오송읍 충북)
5.5 km PM2.5: 9.1 µg/m³
6
Osong-eup, Chungbuk, South Korea (오송읍 충북)
5.5 km PM2.5: 1.4 µg/m³
59
Osong-eup, Chungbuk, South Korea (오송읍 충북)
5.5 km PM2.5: 15.9 µg/m³
30
Osong-eup, Chungbuk, South Korea (오송읍 충북)
5.5 km PM2.5: 7.2 µg/m³
25
Areum-dong, Sejong, South Korea (아름동)
9.8 km PM2.5: 6.0 µg/m³

What cities are near Sejong?

44 Cheongju-si 45 Gongju 59 Cheonan 33 Daejeon 52 Chinch'ŏn 61 Asan 18 Jungpyong 63 Seonghwan 32 Okcheon 64 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 2026-08-07T23:56 UTC.