Worst air pollution Tsuyama, today and tomorrow
Today (16 July): Air quality in Tsuyama is poor. AQI and O3 are poor; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 4:00 PM (O3: 61.2/100).
Tomorrow (17 July 2026): Air quality in Tsuyama is poor. PM1 increases to fair; all other pollutants stay as today. Pollution peaks around 4:00 PM (O3: 66.7/100). 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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Tsuyama's air quality reflects the Okayama Prefecture Yoshii River valley's partial enclosure in the Chugoku Mountains at 100 metres, with vehicle traffic on surrounding roads and the manufacturing, government, and agricultural corridor contributing local sources. The surrounding Chugoku mountain ranges create topographic variation, while winter valley inversions create modest seasonal challenges and Tsuyama generally maintains moderate to good conditions for a major Japanese Chugoku inland mountain valley city throughout most of the year.
Today - 16 July | Pollution peaks at 16:00
AQI:
Poor
61.2/100
PM2.5 (fine particles):
Good
13.5/100
PM10 (coarse particles):
Good
4.0/100
NO2 (nitrogen dioxide):
Good
2.3/100
O3 (ozone):
Poor
61.2/100
SO2 (sulfur dioxide):
Good
0.6/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
14.5/100
PM1 (ultrafine particles):
Good
17.0/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 16:00
AQI:
Poor
66.7/100
PM2.5 (fine particles):
Good
19.0/100
PM10 (coarse particles):
Good
5.4/100
NO2 (nitrogen dioxide):
Good
2.4/100
O3 (ozone):
Poor
66.7/100
SO2 (sulfur dioxide):
Good
0.5/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
15.7/100
PM1 (ultrafine particles):
Fair
23.3/100
Frequently Asked Questions
Is air quality bad in Tsuyama right now?
On 16 July 2026, overall air quality in Tsuyama is poor. AQI is the main air quality indicator at 61.2/100. Pollution peaks around 4:00 PM (O3: 61.2/100).
Will air quality be worse tomorrow in Tsuyama?
On 17 July 2026, air quality conditions in Tsuyama will be similar to today, with AQI forecast at poor at 66.7/100. Pollution peaks around 4:00 PM (O3: 66.7/100).
When is air pollution at its worst in Tsuyama?
Air quality in Tsuyama tends to be worse when vehicle traffic, manufacturing activity, together with agricultural activity build up and the surrounding valley traps air close to the ground. Topographic enclosure in the valley lets pollution accumulate rather than clear out. This is most pronounced in winter, when inversions are more frequent.
Are air quality levels in Tsuyama 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