Worst air pollution Yūki, today and tomorrow
Today (21 September): Air quality in Yūki is fair. AQI and NO2 are fair; PM2.5, PM10, O3, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 4:00 PM (NO2: 21.6/100).
Tomorrow (22 September 2026): Air quality in Yūki is fair. O3 increases to fair; all other pollutants stay as today. Pollution peaks around 2:00 PM (O3: 32.8/100). 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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Yūki's air quality reflects the flat Ibaraki Prefecture Kinu River plain position adjacent to the Tone River corridor, with vehicle traffic on surrounding roads and the Yūki Tsumugi silk weaving — Japan's UNESCO intangible cultural heritage tsumugi silk — manufacturing, and agricultural corridor contributing distinctive silk dye and organic craft emissions alongside primary vehicle sources. The flat Kanto Plain allows reasonable dispersal, while the silk weaving's distinctive organic emissions represent Yūki's most culturally unique air quality characteristic throughout the year.
Today - 21 September | Pollution peaks at 16:00
AQI:
Fair
21.6/100
PM2.5 (fine particles):
Good
7.4/100
PM10 (coarse particles):
Good
6.8/100
NO2 (nitrogen dioxide):
Fair
21.6/100
O3 (ozone):
Good
15.9/100
SO2 (sulfur dioxide):
Good
2.4/100
CO (carbon monoxide):
Good
0.6/100
HCHO (formaldehyde):
Good
4.4/100
PM1 (ultrafine particles):
Good
2.4/100
Levels show the poorest local air quality during the day
Tomorrow - 22 September | Pollution peaks at 14:00
AQI:
Fair
32.8/100
PM2.5 (fine particles):
Good
15.5/100
PM10 (coarse particles):
Good
12.6/100
NO2 (nitrogen dioxide):
Fair
31.8/100
O3 (ozone):
Fair
32.8/100
SO2 (sulfur dioxide):
Good
4.7/100
CO (carbon monoxide):
Good
0.8/100
HCHO (formaldehyde):
Good
10.0/100
PM1 (ultrafine particles):
Good
8.0/100
Frequently Asked Questions
Is air quality bad in Yūki right now?
On 21 September 2026, overall air quality in Yūki is fair. AQI is the main air quality indicator at 21.6/100. Pollution peaks around 4:00 PM (NO2: 21.6/100).
Will air quality be worse tomorrow in Yūki?
On 22 September 2026, air quality conditions in Yūki will be similar to today, with AQI forecast at fair at 32.8/100. Pollution peaks around 2:00 PM (O3: 32.8/100).
When is air pollution at its worst in Yūki?
Yūki usually sees its poorest air quality when vehicle traffic, textile and manufacturing operations, as well as farming and agricultural processing coincide with periods when winds are light and dispersion is poor. Day-to-day conditions here depend heavily on the weather. Local weather patterns add further day-to-day variation.
Are air quality levels in Yūki 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: 22 September 2026 at 02:59 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.
Some text on this page may be generated or summarised using artificial intelligence (AI). Wherever possible, AI-generated content is enriched with Airmine's proprietary data to improve its accuracy and relevance. However, AI-generated content may still contain errors, omissions, or inaccuracies.
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