Worst air pollution Marugame, today and tomorrow
Today (10 August): Air quality in Marugame is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 1:00 PM (O3: 36.4/100).
Tomorrow (11 August 2026): Air quality in Marugame is medium. AQI improves to medium; O3 decreases to medium; all other pollutants stay as today. Pollution peaks around 4:00 PM (O3: 41.5/100). 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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Marugame's air quality benefits from its exceptional Kagawa Prefecture Seto Inland Sea coastal position, with consistent Seto Inland Sea maritime breezes providing reliable ventilation. Vehicle traffic on surrounding roads and the uchiwa fan manufacturing — Marugame producing 90% of Japan's traditional fans — and port corridor contribute local sources, while the outstanding coastal exposure and the distinctive uchiwa paper and lacquer emissions represent Marugame's most locally unique craft air quality signature throughout most of the year.
Today - 10 August | Pollution peaks at 13:00
AQI:
Fair
36.4/100
PM2.5 (fine particles):
Good
7.5/100
PM10 (coarse particles):
Good
2.6/100
NO2 (nitrogen dioxide):
Good
3.7/100
O3 (ozone):
Fair
36.4/100
SO2 (sulfur dioxide):
Good
1.0/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
6.5/100
PM1 (ultrafine particles):
Good
6.6/100
Levels show the poorest local air quality during the day
Tomorrow - 11 August | Pollution peaks at 16:00
AQI:
Medium
41.5/100
PM2.5 (fine particles):
Good
9.3/100
PM10 (coarse particles):
Good
3.5/100
NO2 (nitrogen dioxide):
Good
2.6/100
O3 (ozone):
Medium
41.5/100
SO2 (sulfur dioxide):
Good
1.1/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
4.7/100
PM1 (ultrafine particles):
Good
6.3/100
Frequently Asked Questions
Is air quality bad in Marugame right now?
On 10 August 2026, overall air quality in Marugame is fair. AQI is the main air quality indicator at 36.4/100. Pollution peaks around 1:00 PM (O3: 36.4/100).
Will air quality be worse tomorrow in Marugame?
On 11 August 2026, air quality conditions in Marugame will be better than today, with AQI forecast at medium at 41.5/100. Pollution peaks around 4:00 PM (O3: 41.5/100).
When is air pollution at its worst in Marugame?
The biggest local contributors to pollution in Marugame are road traffic, light manufacturing, as well as shipbuilding and port operations, particularly once the sea breeze weakens. Maritime airflow normally ventilates the area well, though calmer spells let levels rise. This natural ventilation is one reason coastal areas often see better readings than inland cities.
Are air quality levels in Marugame 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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