Worst air pollution Miyakonojō, today and tomorrow
Today (10 August): Air quality in Miyakonojō is fair. AQI and NO2 are fair; PM2.5, PM10, O3, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 11:00 PM (NO2: 23.8/100).
Tomorrow (11 August 2026): Air quality in Miyakonojō is fair. O3 increases to fair; all other pollutants stay as today. Pollution peaks around 5:00 AM (NO2: 29.8/100). 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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Miyakonojō's air quality reflects the Miyazaki Prefecture Kirishima Yaku volcanic highland position at 218 metres, with vehicle traffic on surrounding roads and the shochu distilling, agricultural, and manufacturing corridor contributing local sources. The surrounding Kirishima and Makise volcanic ranges create topographic variation, while consistent Pacific coastal maritime breezes provide background ventilation and Miyakonojo generally maintains moderate to good conditions for a major Japanese southern Kyushu highland agricultural city throughout most of the year.
Today - 10 August | Pollution peaks at 23:00
AQI:
Fair
23.8/100
PM2.5 (fine particles):
Good
7.0/100
PM10 (coarse particles):
Good
2.5/100
NO2 (nitrogen dioxide):
Fair
23.8/100
O3 (ozone):
Good
12.3/100
SO2 (sulfur dioxide):
Good
2.6/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
7.1/100
PM1 (ultrafine particles):
Good
5.9/100
Levels show the poorest local air quality during the day
Tomorrow - 11 August | Pollution peaks at 05:00
AQI:
Fair
29.8/100
PM2.5 (fine particles):
Good
9.3/100
PM10 (coarse particles):
Good
3.0/100
NO2 (nitrogen dioxide):
Fair
29.8/100
O3 (ozone):
Fair
26.3/100
SO2 (sulfur dioxide):
Good
9.2/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
16.8/100
PM1 (ultrafine particles):
Good
9.5/100
Frequently Asked Questions
Is air quality bad in Miyakonojō right now?
On 10 August 2026, overall air quality in Miyakonojō is fair. AQI is the main air quality indicator at 23.8/100. Pollution peaks around 11:00 PM (NO2: 23.8/100).
Will air quality be worse tomorrow in Miyakonojō?
On 11 August 2026, air quality conditions in Miyakonojō will be similar to today, with AQI forecast at fair at 29.8/100. Pollution peaks around 5:00 AM (NO2: 29.8/100).
When is air pollution at its worst in Miyakonojō?
Pollution in Miyakonojō typically rises when traffic on the surrounding roads, manufacturing and food processing, as well as agricultural burning combine, especially once maritime winds die down. Maritime airflow normally ventilates the area well, though calmer spells let levels rise. Areas further inland without this ventilation tend to fare worse.
Are air quality levels in Miyakonojō 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.
Why doesn’t the forecast always reflect wildfire impacts?
Airmine’s forecast uses CAMS (Copernicus Atmosphere Monitoring Service) as its background atmospheric model. While CAMS includes wildfire emissions, these are derived from satellite observations and are not available in real time. During rapidly evolving wildfire events, there may therefore be a delay before increased emissions are incorporated into the model. As a result, the forecast may temporarily underestimate PM₂.₅ and other pollutants associated with wildfire smoke.
During rapidly evolving wildfire events, CAMS may lag by approximately 1–2 days before increased wildfire emissions are fully represented, which can lead to temporary underestimation of PM₂.₅ concentrations in Airmine’s forecast.
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Data provided by Airmine — Last update: 9 August 2026 at 20:27 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.
Disclaimer: Forecasts are provided for informational purposes only and should not be relied upon as medical advice. Actual pollen and air quality conditions may vary from the forecast. If you have allergies, asthma, or another medical condition, consult a healthcare professional. Please see our Terms of Service for important information about limitations of liability.
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