🌿 IsTheAirSafe .com

Seoul Moderate

Seoul, Seoul · South Korea

Updated: Mar 13, 2026, 9:00 PM

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

4.4°C
Temperature
63%
Humidity
2.3
mph wind
Mainly clear
Conditions

Pollutant Breakdown

68
PM2.5
µg/m³ · Fine particulate matter
33
PM10
µg/m³ · Coarse particulate matter
24.5
Ozone
ppb · Ground-level ozone
32.4
NO₂
ppb · Nitrogen dioxide
4
SO₂
ppb · Sulfur dioxide
5.7
CO
ppm · Carbon monoxide

Dominant pollutant: PM25

PM2.5 Forecast (next 7 days)

Thu, 3/12
136
avg AQI
Fri, 3/13
62
avg AQI
Sat, 3/14
77
avg AQI
Sun, 3/15
113
avg AQI
Mon, 3/16
126
avg AQI
Tue, 3/17
103
avg AQI
Wed, 3/18
104
avg AQI

Health Guidance

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

Data from: South Air Korea Environment Corporation (대기오염실시간공개시스템), Seoul Clean Air Pollution Information (서울특별시 기후대기환경정보), 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, where lower values indicate cleaner air. Values between 0–50 are considered 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. The data shown here is updated in real-time and includes PM2.5, PM10, ozone, nitrogen dioxide, sulfur dioxide, and carbon monoxide measurements.

AQI Scale Reference

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