Worst air pollution Ogōshi, today and tomorrow
Today (21 September): Air quality in Ogōshi is fair. AQI, O3, and PM1 are fair; PM2.5, PM10, NO2, SO2, CO, and HCHO are good. Pollution peaks around 3:00 PM (O3: 35.1/100).
Tomorrow (22 September 2026): Air quality in Ogōshi is moderate. AQI worsens to moderate; PM2.5 increases to fair; PM10 increases to fair; NO2 increases to fair; PM1 increases to moderate; all other pollutants stay as today. Pollution peaks around 8:00 AM (PM1: 41.3/100). 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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Ogōshi in Kumamoto reflects the Kumamoto Prefecture suburban corridor position, with vehicle traffic on surrounding roads and the residential and light manufacturing character contributing local sources. Consistent Ariake Sea maritime breezes provide background ventilation, while the broader Kumamoto metropolitan regional background maintains moderate Kumamoto metropolitan suburban readings throughout most of the year.
Today - 21 September | Pollution peaks at 15:00
AQI:
Fair
35.1/100
PM2.5 (fine particles):
Good
15.4/100
PM10 (coarse particles):
Good
16.0/100
NO2 (nitrogen dioxide):
Good
14.8/100
O3 (ozone):
Fair
35.1/100
SO2 (sulfur dioxide):
Good
3.2/100
CO (carbon monoxide):
Good
0.8/100
HCHO (formaldehyde):
Good
5.2/100
PM1 (ultrafine particles):
Fair
24.4/100
Levels show the poorest local air quality during the day
Tomorrow - 22 September | Pollution peaks at 08:00
AQI:
Moderate
41.3/100
PM2.5 (fine particles):
Fair
20.4/100
PM10 (coarse particles):
Fair
21.0/100
NO2 (nitrogen dioxide):
Fair
22.3/100
O3 (ozone):
Fair
37.0/100
SO2 (sulfur dioxide):
Good
5.9/100
CO (carbon monoxide):
Good
1.1/100
HCHO (formaldehyde):
Good
7.4/100
PM1 (ultrafine particles):
Moderate
41.3/100
Frequently Asked Questions
Is air quality bad in Ogōshi right now?
On 21 September 2026, overall air quality in Ogōshi is fair. AQI is the main air quality indicator at 35.1/100. Pollution peaks around 3:00 PM (O3: 35.1/100).
Will air quality be worse tomorrow in Ogōshi?
On 22 September 2026, air quality conditions in Ogōshi will be worse than today, with AQI forecast at moderate at 41.3/100. Pollution peaks around 8:00 AM (PM1: 41.3/100).
When is air pollution at its worst in Ogōshi?
Ogōshi usually sees its poorest air quality when road traffic and manufacturing and food processing coincide with periods when the sea breeze weakens. 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 Ogōshi 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: 22 September 2026 at 02:59 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.
Some text on this page may be generated or summarised using artificial intelligence (AI). Wherever possible, AI-generated content is enriched with Airmine's proprietary data to improve its accuracy and relevance. However, AI-generated content may still contain errors, omissions, or inaccuracies.
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