Worst air pollution Hwasu-dong, today and tomorrow
Today (16 July): Air quality in Hwasu-dong is fair. PM2.5, SO2, and PM1 are fair; AQI, NO2, and O3 are medium; PM10, CO, and HCHO are good. Pollution peaks around 9:00 PM (NO2: 54.9/100).
Tomorrow (17 July 2026): Air quality in Hwasu-dong is very poor. AQI worsens to very poor; NO2 increases to poor; O3 increases to very poor; SO2 decreases to medium; PM1 decreases to medium; all other pollutants stay as today. Pollution peaks around 4:00 PM (O3: 81.8/100). 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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Hwasu-dong in Gyeonggi reflects the flat South Korean western coastal plain position in Hwaseong, with vehicle traffic on surrounding expressways and the Samsung semiconductor campus and manufacturing corridor contributing local sources. Yellow Sea breezes provide limited coastal ventilation, while seasonal Chinese dust transport elevates PM10 and the broader Seoul metropolitan regional background influences readings throughout the year.
Today - 16 July | Pollution peaks at 21:00
AQI:
Medium
54.9/100
PM2.5 (fine particles):
Fair
25.8/100
PM10 (coarse particles):
Good
13.4/100
NO2 (nitrogen dioxide):
Medium
54.9/100
O3 (ozone):
Medium
49.9/100
SO2 (sulfur dioxide):
Fair
23.1/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
5.2/100
PM1 (ultrafine particles):
Fair
23.9/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 16:00
AQI:
Very poor
81.8/100
PM2.5 (fine particles):
Fair
35.9/100
PM10 (coarse particles):
Good
11.2/100
NO2 (nitrogen dioxide):
Poor
69.5/100
O3 (ozone):
Very poor
81.8/100
SO2 (sulfur dioxide):
Medium
42.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
16.5/100
PM1 (ultrafine particles):
Medium
40.7/100
Frequently Asked Questions
Is air quality bad in Hwasu-dong right now?
On 16 July 2026, overall air quality in Hwasu-dong is fair. PM2.5 is the main pollutant at 25.8/100. Pollution peaks around 9:00 PM (NO2: 54.9/100).
Will air quality be worse tomorrow in Hwasu-dong?
On 17 July 2026, air quality conditions in Hwasu-dong will be worse than today, with AQI forecast at very poor at 81.8/100. Pollution peaks around 4:00 PM (O3: 81.8/100).
When is air pollution at its worst in Hwasu-dong?
In Hwasu-dong, road traffic, textile and manufacturing operations, together with port and shipping activity are the main local sources, with conditions worsening when dry, windy weather picks up. Dust carried on these winds adds substantially to particulate levels. Onshore breezes usually help clear the air, but pollution can build up when winds are light.
Are air quality levels in Hwasu-dong 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