Worst air pollution Yangsan, today and tomorrow
Today (15 August): Air quality in Yangsan is fair. O3, SO2, and PM1 are fair; AQI and NO2 are medium; PM2.5, PM10, CO, and HCHO are good. Pollution peaks around 9:00 PM (NO2: 53.4/100).
Tomorrow (16 August 2026): Air quality in Yangsan is fair. O3 decreases to good; SO2 decreases to good; all other pollutants stay as today. Pollution peaks around 12:00 AM (NO2: 49.6/100). Airmine updates local air quality forecasts four times daily.
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Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
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Yangsan's air quality reflects the South Korean southeastern Nakdong River valley position adjacent to Busan in Gyeongnam, with vehicle traffic on surrounding roads and the residential, automotive parts, and logistics corridor contributing local sources. Seasonal Chinese dust transport elevates PM10 during spring yellow dust episodes, while the regional Northeast Asian industrial background and the broader Busan metropolitan readings maintain moderate to elevated South Korean southeastern metropolitan suburban readings throughout the year.
Today - 15 August | Pollution peaks at 21:00
AQI:
Medium
53.4/100
PM2.5 (fine particles):
Good
19.2/100
PM10 (coarse particles):
Good
5.5/100
NO2 (nitrogen dioxide):
Medium
53.4/100
O3 (ozone):
Fair
39.2/100
SO2 (sulfur dioxide):
Fair
21.5/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
6.1/100
PM1 (ultrafine particles):
Fair
23.0/100
Levels show the poorest local air quality during the day
Tomorrow - 16 August | Pollution peaks at 00:00
AQI:
Medium
49.6/100
PM2.5 (fine particles):
Good
17.5/100
PM10 (coarse particles):
Good
5.0/100
NO2 (nitrogen dioxide):
Medium
49.6/100
O3 (ozone):
Good
19.7/100
SO2 (sulfur dioxide):
Good
18.6/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
2.8/100
PM1 (ultrafine particles):
Fair
21.4/100
Frequently Asked Questions
Is air quality bad in Yangsan right now?
On 15 August 2026, overall air quality in Yangsan is fair. O3 is the main pollutant at 39.2/100. Pollution peaks around 9:00 PM (NO2: 53.4/100).
Will air quality be worse tomorrow in Yangsan?
On 16 August 2026, air quality conditions in Yangsan will be similar to today, with PM1 forecast at fair at 21.4/100. Pollution peaks around 12:00 AM (NO2: 49.6/100).
When is air pollution at its worst in Yangsan?
Pollution in Yangsan typically rises when traffic on the surrounding roads along with harbour and shipping traffic combine, especially once dry, windy weather picks up. Strong seasonal winds can lift dust from the surrounding dry terrain and push particulate levels sharply higher. Such events are most common in the drier shoulder seasons.
Are air quality levels in Yangsan based on measurements or forecasts?
It is forecasts derived by downscaling forecasts provided by EU’s Copernicus Atmosphere Monitoring Service (CAMS) by taking into account local conditions such as traffic patterns. CAMS bases its forecast on satellite measurements of particles and chemical compounds in the atmosphere. Airmine’s services were developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team.
Why doesn’t the forecast always reflect wildfire impacts?
Airmine’s forecast uses CAMS (Copernicus Atmosphere Monitoring Service) as its background atmospheric model. While CAMS includes wildfire emissions, these are derived from satellite observations and are not available in real time. During rapidly evolving wildfire events, there may therefore be a delay before increased emissions are incorporated into the model. As a result, the forecast may temporarily underestimate PM₂.₅ and other pollutants associated with wildfire smoke.
During rapidly evolving wildfire events, CAMS may lag by approximately 1–2 days before increased wildfire emissions are fully represented, which can lead to temporary underestimation of PM₂.₅ concentrations in Airmine’s forecast.
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Data provided by Airmine — Last update: 15 August 2026 at 14:26 CEST (Data is updated four times daily.)
This forecast is produced independently using Airmine's own atmospheric data and models.
Unless explicitly made clear, the content on this site has not been paid for by external organisations and is Airmine's sole responsibility.
Disclaimer: Forecasts are provided for informational purposes only and should not be relied upon as medical advice. Actual pollen and air quality conditions may vary from the forecast. If you have allergies, asthma, or another medical condition, consult a healthcare professional. Please see our Terms of Service for important information about limitations of liability.
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