Worst air pollution Masan, today and tomorrow
Today (16 July): Air quality in Masan is poor. AQI and O3 are poor; NO2 is medium; PM2.5, PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 3:00 PM (O3: 77.9/100).
Tomorrow (17 July 2026): Air quality in Masan is poor. PM1 increases to fair; all other pollutants stay as today. Pollution peaks around 11:00 AM (O3: 70.6/100). Airmine updates local air quality forecasts four times daily.
For long term forecasts and maps, see the Airmine app
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
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Masan's air quality reflects the South Korean southeastern Masanman Bay coastal position adjacent to Changwon, with vehicle traffic on surrounding roads and the manufacturing, port, and logistics corridor contributing local sources. Korea Strait maritime breezes provide coastal ventilation, while seasonal Chinese dust transport elevates PM10 and the regional Northeast Asian industrial background maintains moderate to elevated South Korean southeastern coastal industrial readings throughout the year.
Today - 16 July | Pollution peaks at 15:00
AQI:
Poor
77.9/100
PM2.5 (fine particles):
Good
14.9/100
PM10 (coarse particles):
Good
8.5/100
NO2 (nitrogen dioxide):
Medium
43.3/100
O3 (ozone):
Poor
77.9/100
SO2 (sulfur dioxide):
Good
5.1/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
13.4/100
PM1 (ultrafine particles):
Good
13.1/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 11:00
AQI:
Poor
70.6/100
PM2.5 (fine particles):
Good
19.4/100
PM10 (coarse particles):
Good
6.9/100
NO2 (nitrogen dioxide):
Medium
40.5/100
O3 (ozone):
Poor
70.6/100
SO2 (sulfur dioxide):
Good
8.0/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
15.3/100
PM1 (ultrafine particles):
Fair
22.4/100
Frequently Asked Questions
Is air quality bad in Masan right now?
On 16 July 2026, overall air quality in Masan is poor. AQI is the main air quality indicator at 77.9/100. Pollution peaks around 3:00 PM (O3: 77.9/100).
Will air quality be worse tomorrow in Masan?
On 17 July 2026, air quality conditions in Masan will be similar to today, with AQI forecast at poor at 70.6/100. Pollution peaks around 11:00 AM (O3: 70.6/100).
When is air pollution at its worst in Masan?
The biggest local contributors to pollution in Masan are vehicle traffic, manufacturing activity, as well as harbour and shipping traffic, particularly once dry, windy weather picks up. Strong seasonal winds can lift dust from the surrounding dry terrain and push particulate levels sharply higher. Maritime airflow normally ventilates the area well, though calmer spells let levels rise.
Are air quality levels in Masan 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