Air Quality in Sejong, South Korea

Drizzle
21.6°C · 95.2% humidity
21.6°
Feels 21.6°
42
Good
Air quality is satisfactory. Enjoy outdoor activities.
19 stations

Nearby Monitoring Stations

AQI Forecast
54 4am
54
54
42 7am
18
19
21 10am
24
25
25 1pm
26
26
26 4pm
27
25
25 7pm
27
27
27 10pm
27
27
34 1am
34
34
AD 728×90

Air Quality Index Trend

48h · 15 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.

95.2%
Humidity
47.3 km/h
Wind NNE
997.6 hPa
Pressure
1.4
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
42
10.11 µg/m³
PM10
31
34.3 µg/m³
050100150200300500

What is the weather forecast for Sejong?

Temperature & Precipitation

PM2.5 Trend

48h · 15 stations
PM2.510.11 µg/m³ ✓ WHO
Good
PM1034.3 µg/m³
Good
UV INDEX1.4
Low
AD 300×250
Station readings (19 stations within 25 km)
10.11
Median
13.94
Average
7.2
Low
20.2
High
PM2.5 µg/m³ · Model: 16.35 · Bias: +6.2

What is the 7-day forecast for Sejong?

07-21
33.6° 23.2°
0.13 mm
07-22
26.8° 21.6°
10.94 mm
07-23
27.1° 20.3°
7.5 mm
07-24
32.4° 22.5°
4.81 mm
07-25
30.4° 23.2°
3.25 mm
07-26
33.8° 20.8°
3.06 mm
07-27
31.5° 22.9°
1.56 mm
Both models agree Avg diff: 2.7°C

Where are air quality stations near Sejong?

9
Sinheung-dong, Sejong, South Korea (신흥동)
0.1 km PM2.5: 2.2 µg/m³
53
Sinheung-dong, Sejong, South Korea (신흥동)
0.1 km PM2.5: 13.1 µg/m³
30
Sinheung-dong, Sejong, South Korea (신흥동)
0.1 km PM2.5: 7.2 µg/m³
23
Sinheung-dong, Sejong, South Korea (신흥동)
0.1 km PM2.5: 5.5 µg/m³
46
Sinheung-dong, Sejong, South Korea (신흥동)
0.1 km PM2.5: 11.0 µg/m³
17
Sinheung-dong, Sejong, South Korea (신흥동)
0.1 km PM2.5: 4.1 µg/m³
157
Sinheung-dong, Sejong, South Korea (신흥동)
0.1 km PM2.5: 67.1 µg/m³
34
Sinheung-dong, Sejong, South Korea (신흥동)
0.1 km PM2.5: 8.2 µg/m³
16
Sinheung-dong, Sejong, South Korea (신흥동)
0.1 km PM2.5: 3.8 µg/m³
13
Sinheung-dong, Sejong, South Korea (신흥동)
0.1 km PM2.5: 3.1 µg/m³

What cities are near Sejong?

55 Cheongju-si 45 Gongju 37 Cheonan 32 Daejeon 47 Chinch'ŏn 27 Asan 56 Jungpyong 32 Seonghwan 55 Okcheon 66 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 2026-07-21T22:58 UTC.