Fine particles
13.7µg/m³CAMS model • Open-Meteo
South KoreaAir quality, PM2.5 and PM10
Compare air quality across cities in this country. Explore PM2.5, PM10 and other pollutant concentrations, check data timestamps, and view recent trends and historical charts.
South Korea - average concentrations across available points: PM2.5: 13.7 µg/m³, PM10: 16.4 µg/m³, O₃: 37.1 µg/m³, NO₂: 31 µg/m³, SO₂: 16.6 µg/m³, CO: 399.1 µg/m³. Date range: October 23, 2026. Each point contributes its latest available hourly value; this is not a daily or population-weighted average.
Lowest PM2.5: Jeju (7.4 µg/m³). Highest PM2.5: Ansan-si, Anyang, Hwaseong (19.6 µg/m³). This comparison covers 20 cities on October 23, 2026 using their latest available hourly values. Reading times may differ; this is not an annual-average ranking.
Air quality questions →
1 weather warning in effect for South Korea
All cities · South Korea
20 citiesSouth Korea↗
Seoul
PM2.519.4
PM1021
µg/m³
PM2.5 · ModerateNO₂ 43.3O₃ 20
October 23, 202610:00
South Korea↗
Busan
PM2.58.3
PM1013
µg/m³
PM2.5 · FairNO₂ 10.6O₃ 78
October 23, 202610:00
South Korea↗
Incheon
PM2.519.4
PM1021
µg/m³
PM2.5 · ModerateNO₂ 43.3O₃ 20
October 23, 202610:00
South Korea↗
Daegu
PM2.513.5
PM1016.8
µg/m³
PM2.5 · FairNO₂ 38O₃ 28
October 23, 202610:00
South Korea↗
Daejeon
PM2.510.2
PM1013.1
µg/m³
PM2.5 · FairNO₂ 30.1O₃ 40
October 23, 202610:00
South Korea↗
Gwangju
PM2.511
PM1013
µg/m³
PM2.5 · FairNO₂ 31.2O₃ 31
October 23, 202610:00
South Korea↗
Suwon
PM2.514.9
PM1016.6
µg/m³
PM2.5 · FairNO₂ 34.5O₃ 22
October 23, 202610:00
South Korea↗
Goyang
PM2.519.4
PM1021
µg/m³
PM2.5 · ModerateNO₂ 43.3O₃ 20
October 23, 202610:00
South Korea↗
Seongnam
PM2.515
PM1016.6
µg/m³
PM2.5 · FairNO₂ 34.4O₃ 24
October 23, 202610:00
South Korea↗
Ulsan
PM2.58.4
PM1013.2
µg/m³
PM2.5 · FairNO₂ 12.9O₃ 73
October 23, 202610:00
South Korea↗
Jeonju
PM2.513.2
PM1015.7
µg/m³
PM2.5 · FairNO₂ 32O₃ 30
October 23, 202610:00
South Korea↗
Ansan-si
PM2.519.6
PM1021.4
µg/m³
PM2.5 · ModerateNO₂ 44.2O₃ 18
October 23, 202610:00
South Korea↗
Cheongju-si
PM2.59.1
PM1012
µg/m³
PM2.5 · FairNO₂ 24.1O₃ 41
October 23, 202610:00
South Korea↗
Anyang
PM2.519.6
PM1021.4
µg/m³
PM2.5 · ModerateNO₂ 44.2O₃ 18
October 23, 202610:00
South Korea↗
Changwon
PM2.510.7
PM1014.7
µg/m³
PM2.5 · FairNO₂ 23.3O₃ 55
October 23, 202610:00
South Korea↗
Pohang
PM2.59.6
PM1015
µg/m³
PM2.5 · FairNO₂ 15.7O₃ 67
October 23, 202610:00
South Korea↗
Uijeongbu
PM2.515
PM1016.6
µg/m³
PM2.5 · FairNO₂ 34.4O₃ 24
October 23, 202610:00
South Korea↗
Hwaseong
PM2.519.6
PM1021.4
µg/m³
PM2.5 · ModerateNO₂ 44.2O₃ 18
October 23, 202610:00
South Korea↗
Jeju
PM2.57.4
PM1011.3
µg/m³
PM2.5 · FairNO₂ 6O₃ 85
October 23, 202610:00
South Korea↗
Cheonan
PM2.511.6
PM1014
µg/m³
PM2.5 · FairNO₂ 30.7O₃ 30
October 23, 202610:00
PM2.5 vs PM10 - what is the difference? → · Models and monitoring stations →
AVERAGE ACROSS AVAILABLE COUNTRY POINTS
Latest concentrations · South Korea
Particulate matter
16.4µg/m³Ozone
37.1µg/m³Nitrogen dioxide
31µg/m³Sulphur dioxide
16.6µg/m³Carbon monoxide
399.1µg/m³Average of the latest available hour at each model point. This is neither a population-weighted nor a daily average.
DAILY DATA · South Korea
South Korea - air pollution over recent days (2026-08-31 - 2026-10-22)
Averages across available points in the country. These are not population-weighted averages.
PM2.5Lowest 7.34 2026-09-04Highest 26.91 2026-10-172026-08-31 - 2026-10-22
PM10Lowest 9.83 2026-09-04Highest 37.26 2026-10-172026-08-31 - 2026-10-22
O₃Lowest 20.02 2026-10-20Highest 78.47 2026-10-182026-08-31 - 2026-10-22
NO₂Lowest 13.41 2026-09-06Highest 53.84 2026-10-162026-08-31 - 2026-10-22
SO₂Lowest 5.27 2026-09-06Highest 26.41 2026-10-202026-08-31 - 2026-10-22
COLowest 166.63 2026-09-06Highest 542.99 2026-10-202026-08-31 - 2026-10-22
Scroll the chart or table sideways to see the full period.
| Pollutant | 2026-10-22 | 2026-10-21 | 2026-10-20 | 2026-10-19 | 2026-10-18 | 2026-10-17 | 2026-10-16 | 2026-09-07 | 2026-09-06 | 2026-09-05 | 2026-09-04 | 2026-09-03 | 2026-09-02 | 2026-09-01 | 2026-08-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 | 15.85 | 13.13 | 24.79 | 12.97 | 9.13 | 26.91 | 25.06 | 15.38 | 8.16 | 7.39 | 7.34 | 17.27 | 16.6 | 10.29 | 9.59 |
| PM10 | 17.7 | 17.46 | 27.16 | 14.76 | 12.25 | 37.26 | 33.3 | 19.44 | 10.99 | 10.1 | 9.83 | 18.48 | 18.06 | 11.64 | 10.63 |
| O₃ | 32 | 43.92 | 20.02 | 33.95 | 78.47 | 58.49 | 30.72 | 71.43 | 72.57 | 76.05 | 76.75 | 60.53 | 28.25 | 26.87 | 31.48 |
| NO₂ | 32.03 | 27.21 | 50.19 | 31.73 | 17.11 | 38.76 | 53.84 | 23.76 | 13.41 | 17.17 | 18.78 | 39.14 | 41.53 | 31.73 | 32.39 |
| SO₂ | 18.63 | 10.6 | 26.41 | 17.33 | 7.08 | 16.29 | 20.48 | 7.67 | 5.27 | 5.76 | 6.56 | 13.59 | 17.24 | 11.51 | 10.76 |
| CO | 378.49 | 298.88 | 542.99 | 361.01 | 244.86 | 469.6 | 509.02 | 231.59 | 166.63 | 174.42 | 187.42 | 343.31 | 386.83 | 305.65 | 304.51 |
A dot on the chart and a dash in the table indicate missing data. The latest day may be incomplete.
Environment and quality of life ratings · South Korea
Archived ratings of the local environment: green spaces, cleanliness, noise and water quality. Opinion indicators are separate from pollutant concentration measurements.
| Indicator | South Korea | North Korea | Japan | Taiwan | Hong Kong | Macau |
|---|---|---|---|---|---|---|
| Green and Parks in the City | 61% | 50% | 65% | 53% | 52% | — |
| Pleasure of spending time in the city | 43% | 44% | 69% | 47% | 43% | — |
| Air Pollution | 69% | 44% | 33% | 61% | 67% | — |
| Garbage Disposal | 62% | 47% | 71% | 65% | 52% | — |
| Availability and quality of drinking water | 72% | 47% | 73% | 54% | 66% | — |
| Cleanliness and tidiness | 63% | 58% | 74% | 56% | 54% | — |
| Noise and Light pollution | 50% | 33% | 44% | 59% | 66% | — |
| Water Pollution | 38% | 56% | 36% | 58% | 53% | — |
WEATHER & SURROUNDINGS
South Korea · weather forecast
Daily maximum and minimum temperatures. Forecast point: 35.9078, 127.7669.
Scroll the forecast to see the following days.
South Korea · October 21, 2026: minimum temperature 3.4°C, maximum 12.7°C. Wind: 24.1 km/h. Humidity: 91%.
Full forecast: temperature, rainfall, wind and humidity
| Date | Day °C | Min °C | Max °C | Night °C | Rain mm | Wind m/s | Humidity % | Clouds % |
|---|---|---|---|---|---|---|---|---|
| 2026-10-21 | 11.8 | 3.4 | 12.7 | 3.4 | 3.4 | 6.7 | 91 | 97 |
| 2026-10-22 | 9.6 | 1.5 | 12.8 | 4.8 | 0.2 | 2.5 | 39 | 4 |
| 2026-10-23 | 16.5 | 5.3 | 17.7 | 11.2 | 4.7 | 2.7 | 60 | 10 |
| 2026-10-24 | 16 | 11.1 | 16.3 | 14 | 1.6 | 1.6 | 88 | 100 |
| 2026-10-25 | 20.3 | 12.3 | 20.7 | 15.1 | 2.8 | 1.9 | 54 | 100 |
| 2026-10-26 | 14.2 | 12.7 | 14.8 | 12.7 | 30.8 | 1.9 | 98 | 100 |
| 2026-10-27 | 10.9 | 1.8 | 12.5 | 1.8 | 1.4 | 9.4 | 71 | 26 |
| 2026-10-28 | 6.7 | -1.8 | 7.7 | 2.2 | 3.4 | 3.2 | 32 | 94 |
| 2026-10-29 | 11.4 | 2.2 | 11.6 | 6.6 | — | 2.2 | 42 | 100 |
| 2026-10-30 | 12.8 | 8.8 | 14.9 | 9 | 4.6 | 5.5 | 83 | 100 |
| 2026-10-31 | 9.2 | 2.9 | 10.3 | 3.2 | 0.2 | 3.6 | 46 | 34 |
| 2026-11-01 | 12.3 | 1.6 | 12.7 | 6 | 32.4 | 1.7 | 38 | 8 |
| 2026-11-02 | 7.1 | 0.9 | 10.4 | 0.9 | 2.3 | 4.7 | 89 | 100 |
| 2026-11-03 | 6.9 | -1.4 | 7.7 | 5.2 | — | 2.9 | 38 | 88 |
| 2026-11-04 | 11.9 | 4.5 | 12.1 | 5.8 | — | 3.1 | 53 | 5 |
| 2026-11-05 | 13.3 | 5.1 | 13.4 | 7.4 | — | 2 | 53 | 4 |
| 2026-11-06 | 14.5 | 5.7 | 14.6 | 8.8 | — | 2 | 50 | 43 |
UV index by day · South Korea
Data for a country reference point. Local conditions may differ.
Seek shade around midday. SPF 30+, sunglasses and a hat for longer stays.
0-2 low3-5 moderate6-7 high8-10 very high11+ extreme
Scroll the forecast to see the following days.
South Korea · October 22, 2026: UV index: 4.9 .
| Indicator | 2026-10-22 | 2026-10-23 | 2026-10-24 | 2026-10-25 | 2026-10-26 | 2026-10-27 | 2026-10-28 | 2026-10-29 | 2026-10-30 | 2026-10-31 | 2026-11-01 | 2026-11-02 | 2026-11-03 | 2026-11-04 | 2026-11-05 | 2026-11-06 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index | 4.9 | 4.8 | 2.5 | 4.7 | 0.5 | 4.4 | 4.4 | 2.8 | 1.4 | 3.6 | 2.1 | 2.7 | 2.3 | 3.4 | 3.5 | — |
AIR QUALITY QUESTIONS
South Korea · air pollution - questions and answers
What do the latest air quality data show for South Korea?
South Korea - average concentrations across available points: PM2.5: 13.7 µg/m³, PM10: 16.4 µg/m³, O₃: 37.1 µg/m³, NO₂: 31 µg/m³, SO₂: 16.6 µg/m³, CO: 399.1 µg/m³. Date range: October 23, 2026. Each point contributes its latest available hourly value; this is not a daily or population-weighted average.
When was PM2.5 highest in South Korea over the past week?
The highest available daily mean PM2.5 was 26.9 µg/m³ (October 17, 2026). This comparison covers 7 days with data in the seven days before October 23, 2026. The day of the latest reading is excluded because it may be incomplete.
Which cities in South Korea have the cleanest and most polluted air by PM2.5?
Lowest PM2.5: Jeju (7.4 µg/m³). Highest PM2.5: Ansan-si, Anyang, Hwaseong (19.6 µg/m³). This comparison covers 20 cities on October 23, 2026 using their latest available hourly values. Reading times may differ; this is not an annual-average ranking.
Is the PM2.5 concentration for South Korea an AQI score?
No. PM2.5 and PM10 are concentrations in µg/m³. AQI is a separate index calculated using a defined scale. When comparing air quality, also check other pollutants, the date and the averaging period.
What UV index does the available forecast show for South Korea?
For October 22, 2026, the forecast UV index is 4.9. The UV section also shows the following available days.
What wind speed is forecast for South Korea?
For October 21, 2026, forecast wind speed is 24.1 km/h. The weather table includes wind, temperature and other available parameters for subsequent days.
PM2.5 · PM10 · NO₂ · O₃
Understanding air quality and pollution data
What do PM2.5 and PM10 mean?
PM2.5 and PM10 are fractions of airborne particulate matter. PM2.5 covers fine particles up to 2.5 micrometres in diameter, while PM10 covers particles up to 10 micrometres. Concentrations in µg/m³ tell you how many micrograms of particles are present in a cubic metre of air. Compare values over the same time period.
Where does the air pollution data come from?
The latest concentrations come from the CAMS atmospheric model via Open-Meteo for each city’s coordinates. Values describe a model area, so conditions on individual streets may differ. Historical monitoring station data is shown separately where available.
How does PM2.5 concentration differ from AQI?
PM2.5 is the concentration of one particle fraction, expressed in µg/m³. AQI is an index calculated using a particular scale and thresholds. The pollutant cards show concentrations. Our city ranking compares PM2.5; PM10, ozone, nitrogen dioxide and other available gases add to the picture of air quality.
Which dates do the values and charts cover?
Each current value has a data date and time. Current concentration cards show the latest available hour, daily charts summarise individual days, and monthly records let you compare longer periods. These values represent different time intervals.
How can I check pollution in my city?
Search for your city and open its air quality page. Start with PM2.5 and PM10, then check the other available pollutants and the data timestamp. Charts and tables help you compare concentrations over time. Weather and historical climate information complement the pollution data.