Worst air pollution Yurihonjō, today and tomorrow
Today (10 August): Air quality in Yurihonjō is fair. AQI, O3, and HCHO are fair; PM2.5, PM10, NO2, SO2, CO, and PM1 are good. Pollution peaks around 2:00 PM (O3: 27.0/100).
Tomorrow (11 August 2026): Air quality in Yurihonjō is good. AQI improves to good; O3 decreases to good; HCHO decreases to good; all other pollutants stay as today. Pollution peaks around 8:00 AM (O3: 15.1/100). Airmine updates local air quality forecasts four times daily.
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Yurihonjō's air quality benefits from its exceptional Akita Prefecture Sea of Japan coastal position, with consistent Sea of Japan maritime breezes providing reliable ventilation. Vehicle traffic on surrounding roads and the rice, agricultural, and services corridor contribute local sources, while the outstanding Sea of Japan coastal exposure and the Dewa Mountains rising inland create topographic variation and Yurihonjō generally maintains good to moderate conditions for a major Japanese Sea of Japan coastal agricultural city throughout most of the year.
Today - 10 August | Pollution peaks at 14:00
AQI:
Fair
27.0/100
PM2.5 (fine particles):
Good
10.0/100
PM10 (coarse particles):
Good
3.2/100
NO2 (nitrogen dioxide):
Good
12.9/100
O3 (ozone):
Fair
27.0/100
SO2 (sulfur dioxide):
Good
3.6/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Fair
22.4/100
PM1 (ultrafine particles):
Good
11.1/100
Levels show the poorest local air quality during the day
Tomorrow - 11 August | Pollution peaks at 08:00
AQI:
Good
15.1/100
PM2.5 (fine particles):
Good
3.3/100
PM10 (coarse particles):
Good
1.0/100
NO2 (nitrogen dioxide):
Good
12.9/100
O3 (ozone):
Good
15.1/100
SO2 (sulfur dioxide):
Good
4.1/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
14.0/100
PM1 (ultrafine particles):
Good
4.1/100
Frequently Asked Questions
Is air quality bad in Yurihonjō right now?
On 10 August 2026, overall air quality in Yurihonjō is fair. AQI is the main air quality indicator at 27.0/100. Pollution peaks around 2:00 PM (O3: 27.0/100).
Will air quality be worse tomorrow in Yurihonjō?
On 11 August 2026, air quality conditions in Yurihonjō will be better than today, with AQI forecast at good at 15.1/100. Pollution peaks around 8:00 AM (O3: 15.1/100).
When is air pollution at its worst in Yurihonjō?
The biggest local contributors to pollution in Yurihonjō are vehicle traffic and agricultural burning, particularly once maritime winds die down. Sea breezes typically keep conditions in check, except during still weather. Areas further inland without this ventilation tend to fare worse.
Are air quality levels in Yurihonjō 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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