Toggle navigation
Places
AQI (US)
AQC (Australia)
AQHI (Canada)
AQI (China)
AQI (Netherlands)
AQI (US)
CAQI (Europe)
AQI (UK)
AQI (India)
English
Français
Deutsch
日本語
한국어
简体中文
繁體中文
Asia
South Korea
Chungcheongnam-do
Seosan-si
AQI (US)
AQC (Australia)
AQHI (Canada)
AQI (China)
AQI (Netherlands)
AQI (US)
CAQI (Europe)
AQI (UK)
AQI (India)
Seosan-si
Chungcheongnam-do, South Korea
2026-08-20 01:00
AQI (US)
Moderate
Pollutants
PM2.5
μg/m³
10.9
O3
μg/m³
75.2
PM10
μg/m³
20.9
NO2
μg/m³
16.5
SO2
μg/m³
10.2
CO
μg/m³
553.1
Weather
℃
℃
℉
27℃
83%
4 kph
0 of 11
Historical Data
Hourly
Hourly
Daily
AQI (US)
AQI (US)
PM2.5
O3
PM10
NO2
SO2
CO
Places included
Buseok-myeon
AQI 54
Daesan-eup
AQI 56
Dongmun 2(i)-dong
AQI 49
Gobuk-myeon
AQI 68
Haemi-myeon
AQI 45
Jigok-myeon
AQI 52
Jukseong-dong
AQI 45
Seongnam-dong
AQI 45
Seongyeon-myeon
AQI 45
Yecheon-dong
AQI 45
동문동
AQI 45
오남동
AQI 45
운산면
AQI 88
읍내동
AQI 45
팔봉면
AQI 54
Data Sources
http://www.airkorea.or.kr/
Get the App
Scan QR Code
Air Matters
Realtime broadcasting air quality information on your phone for more than 180 countries.
iPhone, iPad
Android
Scan QR Code to Download App
iOS
Google Play
Download APK
Cities Nearby
Seosan-si
AQI 54
Taean-gun
AQI 44
Dangjin-si
AQI 95
Hongseong-gun
AQI 68
Yesan-gun
AQI 75
Cheongyang-gun
AQI 66
Asan-si
AQI 89
Boryeong-si
AQI 45
Hwaseong-si
AQI 100
Cheonan-si
AQI 90
Pyeongtaek-si
AQI 124
Air Matters © 2026