Worst air pollution Seto, today and tomorrow
Today (10 August): Air quality in Seto is medium. AQI and O3 are medium; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 12:00 PM (O3: 51.8/100).
Tomorrow (11 August 2026): Air quality in Seto is medium. All pollutants stay as today. Pollution peaks around 12:00 PM (O3: 48.2/100). 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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Seto's air quality reflects the Aichi Prefecture Seto River valley position adjacent to Nagoya — Seto being the birthplace of Japanese ceramics — with vehicle traffic on surrounding roads and the ceramic manufacturing operations generating elevated ceramic kiln dust PM10 and SO₂ alongside vehicle sources. The surrounding Seto valley hills create topographic variation, while summer photochemical ozone from the Chukyo corridor and the ceramics industry's distinctive kiln emissions represent Seto's most locally unique air quality contributions throughout the year.
Today - 10 August | Pollution peaks at 12:00
AQI:
Medium
51.8/100
PM2.5 (fine particles):
Good
10.8/100
PM10 (coarse particles):
Good
3.4/100
NO2 (nitrogen dioxide):
Good
12.9/100
O3 (ozone):
Medium
51.8/100
SO2 (sulfur dioxide):
Good
6.6/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
12.1/100
PM1 (ultrafine particles):
Good
12.2/100
Levels show the poorest local air quality during the day
Tomorrow - 11 August | Pollution peaks at 12:00
AQI:
Medium
48.2/100
PM2.5 (fine particles):
Good
13.5/100
PM10 (coarse particles):
Good
4.2/100
NO2 (nitrogen dioxide):
Good
10.2/100
O3 (ozone):
Medium
48.2/100
SO2 (sulfur dioxide):
Good
5.5/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
8.3/100
PM1 (ultrafine particles):
Good
14.6/100
Frequently Asked Questions
Is air quality bad in Seto right now?
On 10 August 2026, overall air quality in Seto is medium. AQI is the main air quality indicator at 51.8/100. Pollution peaks around 12:00 PM (O3: 51.8/100).
Will air quality be worse tomorrow in Seto?
On 11 August 2026, air quality conditions in Seto will be similar to today, with AQI forecast at medium at 48.2/100. Pollution peaks around 12:00 PM (O3: 48.2/100).
When is air pollution at its worst in Seto?
The biggest local contributors to pollution in Seto are traffic on the surrounding roads, heavy industry such as steel, cement, or petrochemical processing, along with textile and manufacturing operations, particularly once dry, windy weather picks up. Strong seasonal winds can lift dust from the surrounding dry terrain and push particulate levels sharply higher. Heat and sunlight combine with emissions to form ozone at ground level.
Are air quality levels in Seto 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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