Worst air pollution Chiryū, today and tomorrow
Today (10 August): Air quality in Chiryū is fair. NO2 is fair; AQI and O3 are medium; PM2.5, PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 12:00 PM (O3: 51.8/100).
Tomorrow (11 August 2026): Air quality in Chiryū is fair. 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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Chiryū's air quality reflects the Aichi Prefecture Yahagi River plain position adjacent to Toyota City and the Tokai Junction automotive corridor, with vehicle traffic on surrounding roads and the extraordinary concentration of automotive parts manufacturing — Chiryū sitting at the heart of Toyota's global supply chain — generating elevated automotive industrial and vehicle emissions. The flat Nobi Plain allows reasonable dispersal, while summer photochemical ozone from the Chukyo corridor is the primary warm-season concern and Chiryu's automotive character makes it one of Aichi's most distinctively supply chain-defined urban environments.
Today - 10 August | Pollution peaks at 12:00
AQI:
Medium
51.8/100
PM2.5 (fine particles):
Good
12.6/100
PM10 (coarse particles):
Good
4.0/100
NO2 (nitrogen dioxide):
Fair
25.8/100
O3 (ozone):
Medium
51.8/100
SO2 (sulfur dioxide):
Good
14.3/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
12.1/100
PM1 (ultrafine particles):
Good
14.2/100
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
15.7/100
PM10 (coarse particles):
Good
4.9/100
NO2 (nitrogen dioxide):
Fair
21.6/100
O3 (ozone):
Medium
48.2/100
SO2 (sulfur dioxide):
Good
11.9/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
8.3/100
PM1 (ultrafine particles):
Good
17.0/100
Frequently Asked Questions
Is air quality bad in Chiryū right now?
On 10 August 2026, overall air quality in Chiryū is fair. NO2 is the main pollutant at 25.8/100. Pollution peaks around 12:00 PM (O3: 51.8/100).
Will air quality be worse tomorrow in Chiryū?
On 11 August 2026, air quality conditions in Chiryū will be similar to today, with NO2 forecast at fair at 21.6/100. Pollution peaks around 12:00 PM (O3: 48.2/100).
When is air pollution at its worst in Chiryū?
Chiryū usually sees its poorest air quality when vehicle traffic, heavy industry such as steel, cement, or petrochemical processing, along with manufacturing and food processing coincide with periods when windblown dust events occur. 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 Chiryū 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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