What is the air quality in Sejong today?

The current Air Quality Index (AQI) in Sejong is 46 (Good). PM2.5 concentration is 11.0 µg/m³.

What is the temperature in Sejong right now?

The current temperature in Sejong is 20.9°C (feels like 20.9°C). Humidity is 35.9% and wind speed is 45.1 km/h.

Is it safe to go outside in Sejong?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 0.0 (Low).

Air Quality in Sejong, South Korea

Windy

20.9°C · 35.9% humidity

20.9°

Feels 20.9°

Good

Air quality is satisfactory. Enjoy outdoor activities.

7 stations

Nearby Monitoring Stations

AQI Forecast

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Air Quality Index Trend

45h · 36 stn

View full history →

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.

35.9%

Humidity

45.1 km/h

Wind NNW

1016.3 hPa

Pressure

0.0

UV Low

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

11.0 µg/m³

PM10

27.4 µg/m³

050100150200300500

What is the weather forecast for Sejong?

Temperature & Precipitation

PM2.5 Trend

45h · 36 stations

PM2.511.0 µg/m³ ✓ WHO

Good

PM1027.4 µg/m³

Good

UV INDEX0.0

Low

Station readings (7 stations within 25 km)

11.0

Median

13.79

Average

9.4

Low

18.3

High

PM2.5 µg/m³ · Model: 8.2 · Bias: -2.8

What is the 7-day forecast for Sejong?

10-21

20.9° 11.9°

10-22

23.0° 10.7°

10-23

21.0° 8.1°

10-24

14.5° 12.1°

19.25 mm

10-25

19.3° 7.9°

10-26

18.9° 8.5°

10-27

18.9° 9.8°

Both models agree Avg diff: 4.2°C

Where are air quality stations near Sejong?

Sinheung-dong, Sejong, South Korea (신흥동)

0.1 km PM2.5: 11.0 µg/m³

Sinheung-dong, Sejong, South Korea (신흥동)

0.1 km PM2.5: 15.9 µg/m³

Sinheung-dong, Sejong, South Korea (신흥동)

0.1 km PM2.5: 10.1 µg/m³

Sinheung-dong, Sejong, South Korea (신흥동)

0.1 km PM2.5: 11.0 µg/m³

Osong-eup, Chungbuk, South Korea (오송읍 충북)

5.5 km PM2.5: 15.0 µg/m³

Osong-eup, Chungbuk, South Korea (오송읍 충북)

5.5 km PM2.5: 16.9 µg/m³

Osong-eup, Chungbuk, South Korea (오송읍 충북)

5.5 km PM2.5: 17.8 µg/m³

Osong-eup, Chungbuk, South Korea (오송읍 충북)

5.5 km PM2.5: 15.0 µg/m³

Areum-dong, Sejong, South Korea (아름동)

9.8 km PM2.5: 9.1 µg/m³

Areum-dong, Sejong, South Korea (아름동)

9.8 km PM2.5: 11.0 µg/m³

What cities are near Sejong?

58 Cheongju-si 48 Gongju 54 Cheonan 74 Daejeon 59 Chinch'ŏn 76 Asan 58 Jungpyong 57 Seonghwan 57 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 2026-10-21T03:08 UTC.