Worst air pollution Ryūgasaki, today and tomorrow
Today (10 August): Air quality in Ryūgasaki is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 12:00 PM (O3: 29.7/100).
Tomorrow (11 August 2026): Air quality in Ryūgasaki is fair. AQI improves to medium; NO2 increases to fair; O3 decreases to medium; all other pollutants stay as today. Pollution peaks around 3:00 PM (O3: 40.7/100). 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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Ryūgasaki's air quality reflects the flat Ibaraki Prefecture Kinu River corridor position adjacent to the Tsukuba Science City, with vehicle traffic on surrounding roads and the manufacturing, residential, and research character contributing local sources. The flat Kanto Plain allows reasonable dispersal, while summer photochemical ozone from the broader Kanto corridor is the primary warm-season concern and Ryugasaki generally maintains moderate Japanese Ibaraki suburban readings throughout most of the year.
Today - 10 August | Pollution peaks at 12:00
AQI:
Fair
29.7/100
PM2.5 (fine particles):
Good
8.4/100
PM10 (coarse particles):
Good
2.6/100
NO2 (nitrogen dioxide):
Good
11.3/100
O3 (ozone):
Fair
29.7/100
SO2 (sulfur dioxide):
Good
3.6/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
8.6/100
PM1 (ultrafine particles):
Good
9.4/100
Levels show the poorest local air quality during the day
Tomorrow - 11 August | Pollution peaks at 15:00
AQI:
Medium
40.7/100
PM2.5 (fine particles):
Good
12.2/100
PM10 (coarse particles):
Good
3.3/100
NO2 (nitrogen dioxide):
Fair
25.0/100
O3 (ozone):
Medium
40.7/100
SO2 (sulfur dioxide):
Good
9.0/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
8.6/100
PM1 (ultrafine particles):
Good
17.5/100
Frequently Asked Questions
Is air quality bad in Ryūgasaki right now?
On 10 August 2026, overall air quality in Ryūgasaki is fair. AQI is the main air quality indicator at 29.7/100. Pollution peaks around 12:00 PM (O3: 29.7/100).
Will air quality be worse tomorrow in Ryūgasaki?
On 11 August 2026, air quality conditions in Ryūgasaki will be similar to today, with NO2 forecast at fair at 25.0/100. Pollution peaks around 3:00 PM (O3: 40.7/100).
When is air pollution at its worst in Ryūgasaki?
In Ryūgasaki, traffic emissions, steel, cement, and chemical production, as well as textile and manufacturing operations are the main local sources, with conditions worsening when hot, still weather settles in. Heat and sunlight combine with emissions to form ozone at ground level. Cooler temperatures for the rest of the year keep this in check.
Are air quality levels in Ryūgasaki 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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