Seoul Good

Seoul, Seoul

Updated: May 11, 2026, 11:00 PM

Good

Air quality is satisfactory, and air pollution poses little or no risk.

Current Weather

15.1°C

Temperature

97%

Humidity

1.2

mph wind

Dense drizzle

Conditions

Pollutant Breakdown

PM2.5

µg/m³ · Fine particles

PM10

µg/m³ · Coarse particles

31.2

Ozone

ppb · Ground-level ozone

15.1

NO₂

ppb · Nitrogen dioxide

4.3

SO₂

ppb · Sulfur dioxide

4.2

ppm · Carbon monoxide

Dominant pollutant: PM25

PM2.5 Forecast (next 7 days)

Sun

5/10

avg

Mon

5/11

avg

Tue

5/12

114

avg

Wed

5/13

172

avg

Thu

5/14

134

avg

Fri

5/15

127

avg

Sat

5/16

114

avg

Health Guidance

✅

General population: No restrictions. Enjoy outdoor activities.

✅

Sensitive groups: Air quality is good. Normal activities are fine.

💨

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 50, which is classified as "Good". Air quality is satisfactory, and air pollution poses little or no risk.

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