Worst air pollution Yoshiichō-shimobaru, today and tomorrow
Today (16 July): Air quality in Yoshiichō-shimobaru is medium. AQI and O3 are medium; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 1:00 PM (O3: 45.1/100).
Tomorrow (17 July 2026): Air quality in Yoshiichō-shimobaru is medium. All pollutants stay as today. Pollution peaks around 9:00 PM (O3: 53.2/100). 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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Yoshiichō-shimobaru in Nagasaki reflects the Nagasaki Peninsula's coastal position on the East China Sea, with vehicle traffic on surrounding roads and the shipbuilding and residential character contributing local sources. Consistent East China Sea maritime breezes provide reliable ventilation, while the dramatic hillside topography creates distinctive local wind patterns and the area generally maintains moderate Nagasaki metropolitan coastal readings throughout most of the year.
Today - 16 July | Pollution peaks at 13:00
AQI:
Medium
45.1/100
PM2.5 (fine particles):
Good
13.4/100
PM10 (coarse particles):
Good
5.1/100
NO2 (nitrogen dioxide):
Good
6.6/100
O3 (ozone):
Medium
45.1/100
SO2 (sulfur dioxide):
Good
2.7/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
2.0/100
PM1 (ultrafine particles):
Good
9.0/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 21:00
AQI:
Medium
53.2/100
PM2.5 (fine particles):
Good
15.6/100
PM10 (coarse particles):
Good
5.4/100
NO2 (nitrogen dioxide):
Good
5.4/100
O3 (ozone):
Medium
53.2/100
SO2 (sulfur dioxide):
Good
3.7/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
2.1/100
PM1 (ultrafine particles):
Good
14.2/100
Frequently Asked Questions
Is air quality bad in Yoshiichō-shimobaru right now?
On 16 July 2026, overall air quality in Yoshiichō-shimobaru is medium. AQI is the main air quality indicator at 45.1/100. Pollution peaks around 1:00 PM (O3: 45.1/100).
Will air quality be worse tomorrow in Yoshiichō-shimobaru?
On 17 July 2026, air quality conditions in Yoshiichō-shimobaru will be similar to today, with AQI forecast at medium at 53.2/100. Pollution peaks around 9:00 PM (O3: 53.2/100).
When is air pollution at its worst in Yoshiichō-shimobaru?
Air quality in Yoshiichō-shimobaru tends to be worse when road traffic and shipbuilding and port operations build up and the sea breeze weakens. Onshore breezes usually help clear the air, but pollution can build up when winds are light. This coastal advantage is less pronounced during still, high-pressure weather.
Are air quality levels in Yoshiichō-shimobaru 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