Worst air pollution Nichinan, today and tomorrow
Today (16 July): Air quality in Nichinan is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 4:00 PM (O3: 29.3/100).
Tomorrow (17 July 2026): Air quality in Nichinan is fair. NO2 increases to fair; SO2 increases to fair; HCHO increases to fair; all other pollutants stay as today. Pollution peaks around 1:00 PM (O3: 34.0/100). 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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Nichinan's air quality benefits from its exceptional Miyazaki Prefecture Pacific Ocean and Hyuga Sea coastal position, with consistent Pacific maritime breezes providing reliable ventilation. Vehicle traffic on surrounding roads and the shochu, fishing, and Nichinan Coast tourism corridor contribute local sources, while the outstanding Pacific coastal exposure and the dramatic Nichinan Coast seascape generally maintain Nichinan at good to moderate conditions for a major Japanese southern Pacific coastal city throughout most of the year.
Today - 16 July | Pollution peaks at 16:00
AQI:
Fair
29.3/100
PM2.5 (fine particles):
Good
7.8/100
PM10 (coarse particles):
Good
2.7/100
NO2 (nitrogen dioxide):
Good
12.8/100
O3 (ozone):
Fair
29.3/100
SO2 (sulfur dioxide):
Good
17.1/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
7.3/100
PM1 (ultrafine particles):
Good
7.1/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 13:00
AQI:
Fair
34.0/100
PM2.5 (fine particles):
Good
13.5/100
PM10 (coarse particles):
Good
4.1/100
NO2 (nitrogen dioxide):
Fair
28.9/100
O3 (ozone):
Fair
34.0/100
SO2 (sulfur dioxide):
Fair
20.1/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Fair
20.2/100
PM1 (ultrafine particles):
Good
16.3/100
Frequently Asked Questions
Is air quality bad in Nichinan right now?
On 16 July 2026, overall air quality in Nichinan is fair. AQI is the main air quality indicator at 29.3/100. Pollution peaks around 4:00 PM (O3: 29.3/100).
Will air quality be worse tomorrow in Nichinan?
On 17 July 2026, air quality conditions in Nichinan will be similar to today, with AQI forecast at fair at 34.0/100. Pollution peaks around 1:00 PM (O3: 34.0/100).
When is air pollution at its worst in Nichinan?
The biggest local contributors to pollution in Nichinan are road traffic, harbour and shipping traffic, and tourism-related traffic, particularly once onshore breezes fall calm. Sea breezes typically keep conditions in check, except during still weather. This coastal advantage is less pronounced during still, high-pressure weather.
Are air quality levels in Nichinan 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