Worst air pollution Tongjin, today and tomorrow
Today (10 August): Air quality in Tongjin is fair. NO2 is fair; AQI and O3 are medium; PM2.5, PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 2:00 PM (O3: 47.1/100).
Tomorrow (11 August 2026): Air quality in Tongjin is poor. AQI worsens to poor; O3 increases to poor; all other pollutants stay as today. Pollution peaks around 5:00 PM (O3: 62.5/100). 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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Tongjin in Gyeonggi reflects the flat South Korean western coastal plain position near Hwaseong, with vehicle traffic on surrounding expressways and the semiconductor, automotive, and logistics corridor contributing local sources. Yellow Sea breezes provide coastal ventilation, while seasonal Chinese dust transport elevates PM10 during spring yellow dust episodes and the broader Seoul metropolitan regional background influences readings throughout the year.
Today - 10 August | Pollution peaks at 14:00
AQI:
Medium
47.1/100
PM2.5 (fine particles):
Good
7.2/100
PM10 (coarse particles):
Good
2.5/100
NO2 (nitrogen dioxide):
Fair
21.2/100
O3 (ozone):
Medium
47.1/100
SO2 (sulfur dioxide):
Good
4.5/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
11.5/100
PM1 (ultrafine particles):
Good
6.0/100
Levels show the poorest local air quality during the day
Tomorrow - 11 August | Pollution peaks at 17:00
AQI:
Poor
62.5/100
PM2.5 (fine particles):
Good
8.6/100
PM10 (coarse particles):
Good
3.0/100
NO2 (nitrogen dioxide):
Fair
26.0/100
O3 (ozone):
Poor
62.5/100
SO2 (sulfur dioxide):
Good
5.3/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
12.8/100
PM1 (ultrafine particles):
Good
7.9/100
Frequently Asked Questions
Is air quality bad in Tongjin right now?
On 10 August 2026, overall air quality in Tongjin is fair. NO2 is the main pollutant at 21.2/100. Pollution peaks around 2:00 PM (O3: 47.1/100).
Will air quality be worse tomorrow in Tongjin?
On 11 August 2026, air quality conditions in Tongjin will be worse than today, with AQI forecast at poor at 62.5/100. Pollution peaks around 5:00 PM (O3: 62.5/100).
When is air pollution at its worst in Tongjin?
Tongjin usually sees its poorest air quality when road traffic together with shipbuilding and port operations coincide with periods when dry spells bring strong winds. These wind events can carry dust in from the surrounding arid landscape. Maritime airflow normally ventilates the area well, though calmer spells let levels rise.
Are air quality levels in Tongjin 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: 9 August 2026 at 20:27 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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