🌿 IsTheAirSafe .com

Seoul Moderate

Seoul, Seoul

Updated: Nov 5, 2026, 3:00 AM

680500
Moderate

Air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution.

Current Weather

9.4°C
Temperature
74%
Humidity
2.5
mph wind
Partly cloudy
Conditions

Pollutant Breakdown

68
PM2.5
µg/m³ · Fine particles
40
PM10
µg/m³ · Coarse particles
9.2
Ozone
ppb · Ground-level ozone
26.3
NO₂
ppb · Nitrogen dioxide
4.6
SO₂
ppb · Sulfur dioxide
6.3
CO
ppm · Carbon monoxide

Dominant pollutant: PM25

PM2.5 Forecast (next 7 days)

Tue
11/3
78
avg
Wed
11/4
92
avg
Thu
11/5
79
avg
Fri
11/6
37
avg
Sat
11/7
30
avg
Sun
11/8
82
avg
Mon
11/9
66
avg

Health Guidance

⚠️
Unusually sensitive people: Consider reducing prolonged outdoor exertion.
✅
General population: No restrictions for most people.
💨
Keep windows closed if AQI is Unhealthy or above. Use HEPA air purifiers indoors.

Data from: Seoul Clean Air Pollution Information (서울특별시 기후대기환경정보), South Air Korea Environment Corporation (대기오염실시간공개시스템), World Air Quality Index Project

Is the air safe in Seoul today?

The current Air Quality Index (AQI) in Seoul is 68, which is classified as "Moderate". Air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution.

The AQI scale runs from 0 to 500. Values of 0–50 are Good, 51–100 are Moderate, 101–150 are Unhealthy for Sensitive Groups, 151–200 are Unhealthy, 201–300 are Very Unhealthy, and 301–500 are Hazardous.

Air quality in Seoul, Seoul is monitored by local environmental agencies and reported through the World Air Quality Index project. Data is updated hourly and includes PM2.5, PM10, ozone, nitrogen dioxide, sulfur dioxide, and carbon monoxide.

AQI Scale Reference

0–50
Good
51–100
Moderate
101–150
Unhealthy for Sensitive Groups
151–200
Unhealthy
201–300
Very Unhealthy
301+
Hazardous