Worst air pollution Changwon, today and tomorrow
Today (16 July): Air quality in Changwon is very poor. AQI and O3 are very poor; NO2 is poor; SO2 is fair; PM2.5, PM10, CO, HCHO, and PM1 are good. Pollution peaks around 4:00 PM (O3: 81.0/100).
Tomorrow (17 July 2026): Air quality in Changwon is poor. AQI improves to poor; PM2.5 increases to fair; O3 decreases to poor; PM1 increases to fair; all other pollutants stay as today. Pollution peaks around 9:00 PM (NO2: 79.3/100). 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 - 16 July | Pollution peaks at 16:00
AQI:
Very poor
81.0/100
PM2.5 (fine particles):
Good
18.4/100
PM10 (coarse particles):
Good
9.3/100
NO2 (nitrogen dioxide):
Poor
76.0/100
O3 (ozone):
Very poor
81.0/100
SO2 (sulfur dioxide):
Fair
22.0/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
11.7/100
PM1 (ultrafine particles):
Good
18.4/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 21:00
AQI:
Poor
79.3/100
PM2.5 (fine particles):
Fair
22.3/100
PM10 (coarse particles):
Good
7.4/100
NO2 (nitrogen dioxide):
Poor
79.3/100
O3 (ozone):
Poor
61.8/100
SO2 (sulfur dioxide):
Fair
29.6/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
12.3/100
PM1 (ultrafine particles):
Fair
27.5/100
Frequently Asked Questions
Is air quality bad in Changwon right now?
On 16 July 2026, overall air quality in Changwon is very poor. AQI is the main air quality indicator at 81.0/100. Pollution peaks around 4:00 PM (O3: 81.0/100).
Will air quality be worse tomorrow in Changwon?
On 17 July 2026, air quality conditions in Changwon will be better than today, with AQI forecast at poor at 79.3/100. Pollution peaks around 9:00 PM (NO2: 79.3/100).
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.
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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