Worst air pollution Ishioka, today and tomorrow
Today (21 September): Air quality in Ishioka is good. AQI, PM2.5, PM10, NO2, O3, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 12:00 AM (O3: 12.4/100).
Tomorrow (22 September 2026): Air quality in Ishioka is fair. AQI worsens to fair; NO2 increases to fair; O3 increases to fair; all other pollutants stay as today. Pollution peaks around 4:00 PM (NO2: 23.6/100). 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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Ishioka's air quality reflects the flat Ibaraki Prefecture Koishikawa River plain position, with vehicle traffic on surrounding roads and the manufacturing, food processing, and agricultural corridor 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 Ishioka generally maintains moderate Japanese Ibaraki plain city readings throughout most of the year.
Today - 21 September | Pollution peaks at 00:00
AQI:
Good
12.4/100
PM2.5 (fine particles):
Good
9.0/100
PM10 (coarse particles):
Good
10.9/100
NO2 (nitrogen dioxide):
Good
11.5/100
O3 (ozone):
Good
12.4/100
SO2 (sulfur dioxide):
Good
0.7/100
CO (carbon monoxide):
Good
0.5/100
HCHO (formaldehyde):
Good
1.3/100
PM1 (ultrafine particles):
Good
2.7/100
Levels show the poorest local air quality during the day
Tomorrow - 22 September | Pollution peaks at 16:00
AQI:
Fair
23.6/100
PM2.5 (fine particles):
Good
11.4/100
PM10 (coarse particles):
Good
11.5/100
NO2 (nitrogen dioxide):
Fair
23.6/100
O3 (ozone):
Fair
22.9/100
SO2 (sulfur dioxide):
Good
3.3/100
CO (carbon monoxide):
Good
0.9/100
HCHO (formaldehyde):
Good
10.1/100
PM1 (ultrafine particles):
Good
5.9/100
Frequently Asked Questions
Is air quality bad in Ishioka right now?
On 21 September 2026, overall air quality in Ishioka is good. AQI is the main air quality indicator at 12.4/100. Pollution peaks around 12:00 AM (O3: 12.4/100).
Will air quality be worse tomorrow in Ishioka?
On 22 September 2026, air quality conditions in Ishioka will be worse than today, with AQI forecast at fair at 23.6/100. Pollution peaks around 4:00 PM (NO2: 23.6/100).
When is air pollution at its worst in Ishioka?
In Ishioka, traffic emissions, heavy industrial and chemical processing, as well as light manufacturing are the main local sources, with conditions worsening when hot, still weather settles in. Photochemical reactions in the heat push ozone levels higher. Cooler temperatures for the rest of the year keep this in check.
Are air quality levels in Ishioka 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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