Worst air pollution Tongjin, today and tomorrow
Today (16 July): Air quality in Tongjin is poor. AQI and O3 are poor; PM2.5 and PM1 are fair; NO2 is medium; PM10, SO2, CO, and HCHO are good. Pollution peaks around 2:00 PM (O3: 61.3/100).
Tomorrow (17 July 2026): Air quality in Tongjin is very poor. AQI worsens to very poor; O3 increases to very poor; SO2 increases to fair; PM1 decreases to medium; all other pollutants stay as today. Pollution peaks around 3:00 PM (O3: 99.7/100). 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 - 16 July | Pollution peaks at 14:00
AQI:
Poor
61.3/100
PM2.5 (fine particles):
Fair
27.3/100
PM10 (coarse particles):
Good
12.8/100
NO2 (nitrogen dioxide):
Medium
46.9/100
O3 (ozone):
Poor
61.3/100
SO2 (sulfur dioxide):
Good
19.3/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
8.9/100
PM1 (ultrafine particles):
Fair
30.1/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 15:00
AQI:
Very poor
99.7/100
PM2.5 (fine particles):
Fair
39.1/100
PM10 (coarse particles):
Good
12.5/100
NO2 (nitrogen dioxide):
Medium
55.6/100
O3 (ozone):
Very poor
99.7/100
SO2 (sulfur dioxide):
Fair
23.7/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
17.8/100
PM1 (ultrafine particles):
Medium
41.6/100
Frequently Asked Questions
Is air quality bad in Tongjin right now?
On 16 July 2026, overall air quality in Tongjin is poor. AQI is the main air quality indicator at 61.3/100. Pollution peaks around 2:00 PM (O3: 61.3/100).
Will air quality be worse tomorrow in Tongjin?
On 17 July 2026, air quality conditions in Tongjin will be worse than today, with AQI forecast at very poor at 99.7/100. Pollution peaks around 3:00 PM (O3: 99.7/100).
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.
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Data provided by Airmine — Last update: 16 July 2026 at 10:33 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.
For long term forecasts and maps, see the Airmine app