Highest air pollution Nagasaki, today and tomorrow
Today (29 June): Air quality in Nagasaki is medium. AQI and O3 are medium; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 4:00 PM (O3: 45.2/100).
Tomorrow (30 June 2026): Air quality in Nagasaki is fair. AQI worsens to fair; O3 increases to fair; all other pollutants stay as today. Pollution peaks around 3:00 PM (O3: 34.4/100). 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
Nagasaki's air quality benefits from its exceptional Nagasaki Bay and East China Sea coastal position in Kyushu, with consistent East China Sea and Tsushima Strait maritime breezes providing reliable ventilation. Vehicle traffic on surrounding roads and the shipbuilding, tourism, and services corridor contribute local sources, while the outstanding coastal exposure and the dramatic hillside topography create distinctive local wind patterns and Nagasaki generally maintains good to moderate conditions for a major Japanese historical coastal city throughout most of the year.
Today - 29 June | Pollution peaks at 16:00
AQI:
Medium
45.2/100
PM2.5 (fine particles):
Good
8.3/100
PM10 (coarse particles):
Good
3.0/100
NO2 (nitrogen dioxide):
Good
6.3/100
O3 (ozone):
Medium
45.2/100
SO2 (sulfur dioxide):
Good
3.5/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
4.5/100
PM1 (ultrafine particles):
Good
6.9/100
Levels show the poorest local air quality during the day
Tomorrow - 30 June | Pollution peaks at 15:00
AQI:
Fair
34.4/100
PM2.5 (fine particles):
Good
9.0/100
PM10 (coarse particles):
Good
3.3/100
NO2 (nitrogen dioxide):
Good
6.5/100
O3 (ozone):
Fair
34.4/100
SO2 (sulfur dioxide):
Good
4.6/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
4.0/100
PM1 (ultrafine particles):
Good
7.4/100
Pollen forecast in Nagasaki
View pollen forecastFrequently Asked Questions
Is air quality bad in Nagasaki right now?
On 29 June 2026, overall air quality in Nagasaki is medium. AQI is the main air quality indicator at 45.2/100. Pollution peaks around 4:00 PM (O3: 45.2/100).
Will air quality be worse tomorrow in Nagasaki?
On 30 June 2026, air quality conditions in Nagasaki will be worse than today, with AQI forecast at fair at 34.4/100. Pollution peaks around 3:00 PM (O3: 34.4/100).
Are air quality levels in Nagasaki 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: 28 June 2026 at 18:36 CET (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
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team