Worst air pollution Changwon, today and tomorrow
Today (10 August): Air quality in Changwon is fair. AQI, NO2, and O3 are fair; PM2.5, PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 8:00 PM (NO2: 32.2/100).
Tomorrow (11 August 2026): Air quality in Changwon is fair. All pollutants stay as today. Pollution peaks around 10:00 PM (NO2: 35.4/100). 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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Changwon's air quality reflects the South Korean southeastern Masanman Bay coastal position in the Gyeongnam industrial corridor, with vehicle traffic on surrounding expressways and the shipbuilding, machinery, and defence manufacturing corridor contributing elevated industrial emissions. Korea Strait maritime breezes provide coastal ventilation, while the industrial complex's scale and the regional Northeast Asian industrial background maintain Changwon among South Korea's more industrially defined manufacturing port city environments throughout the year.
Today - 10 August | Pollution peaks at 20:00
AQI:
Fair
32.2/100
PM2.5 (fine particles):
Good
11.8/100
PM10 (coarse particles):
Good
4.7/100
NO2 (nitrogen dioxide):
Fair
32.2/100
O3 (ozone):
Fair
27.6/100
SO2 (sulfur dioxide):
Good
13.1/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
4.9/100
PM1 (ultrafine particles):
Good
5.0/100
Levels show the poorest local air quality during the day
Tomorrow - 11 August | Pollution peaks at 22:00
AQI:
Fair
35.4/100
PM2.5 (fine particles):
Good
11.9/100
PM10 (coarse particles):
Good
4.6/100
NO2 (nitrogen dioxide):
Fair
35.4/100
O3 (ozone):
Fair
29.4/100
SO2 (sulfur dioxide):
Good
15.3/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
5.2/100
PM1 (ultrafine particles):
Good
6.1/100
Frequently Asked Questions
Is air quality bad in Changwon right now?
On 10 August 2026, overall air quality in Changwon is fair. AQI is the main air quality indicator at 32.2/100. Pollution peaks around 8:00 PM (NO2: 32.2/100).
Will air quality be worse tomorrow in Changwon?
On 11 August 2026, air quality conditions in Changwon will be similar to today, with AQI forecast at fair at 35.4/100. Pollution peaks around 10:00 PM (NO2: 35.4/100).
When is air pollution at its worst in Changwon?
The biggest local contributors to pollution in Changwon are traffic on the surrounding roads, manufacturing and food processing, along with shipbuilding and port operations, particularly once dry spells bring strong winds. Strong seasonal winds can lift dust from the surrounding dry terrain and push particulate levels sharply higher. Onshore breezes usually help clear the air, but pollution can build up when winds are light.
Are air quality levels in Changwon 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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