Worst air pollution Higashi-ōsaka, today and tomorrow
Today (21 September): Air quality in Higashi-ōsaka is fair. AQI and PM1 are fair; PM2.5, PM10, NO2, O3, SO2, CO, and HCHO are good. Pollution peaks around 10:00 AM (PM1: 29.6/100).
Tomorrow (22 September 2026): Air quality in Higashi-ōsaka is fair. PM2.5 increases to fair; PM10 increases to fair; NO2 increases to fair; all other pollutants stay as today. Pollution peaks around 8:00 AM (PM1: 37.3/100). 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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Higashi-ōsaka's air quality reflects the Osaka metropolitan area's eastern industrial corridor adjacent to the Ikoma Mountain base, with vehicle traffic on surrounding expressways and the manufacturing, metals, and technology corridor contributing elevated industrial PM2.5. Osaka Bay breezes provide limited maritime ventilation from the west, while the Ikoma Mountain creates topographic enclosure to the east and the extraordinary Osaka metropolitan industrial background maintains moderate to elevated Osaka eastern industrial corridor readings throughout most of the year.
Today - 21 September | Pollution peaks at 10:00
AQI:
Fair
29.6/100
PM2.5 (fine particles):
Good
15.1/100
PM10 (coarse particles):
Good
11.4/100
NO2 (nitrogen dioxide):
Good
18.3/100
O3 (ozone):
Good
8.2/100
SO2 (sulfur dioxide):
Good
5.5/100
CO (carbon monoxide):
Good
0.5/100
HCHO (formaldehyde):
Good
5.1/100
PM1 (ultrafine particles):
Fair
29.6/100
Levels show the poorest local air quality during the day
Tomorrow - 22 September | Pollution peaks at 08:00
AQI:
Fair
37.3/100
PM2.5 (fine particles):
Fair
25.5/100
PM10 (coarse particles):
Fair
21.2/100
NO2 (nitrogen dioxide):
Fair
20.4/100
O3 (ozone):
Good
9.8/100
SO2 (sulfur dioxide):
Good
6.2/100
CO (carbon monoxide):
Good
0.7/100
HCHO (formaldehyde):
Good
3.7/100
PM1 (ultrafine particles):
Fair
37.3/100
Frequently Asked Questions
Is air quality bad in Higashi-ōsaka right now?
On 21 September 2026, overall air quality in Higashi-ōsaka is fair. AQI is the main air quality indicator at 29.6/100. Pollution peaks around 10:00 AM (PM1: 29.6/100).
Will air quality be worse tomorrow in Higashi-ōsaka?
On 22 September 2026, air quality conditions in Higashi-ōsaka will be similar to today, with AQI forecast at fair at 37.3/100. Pollution peaks around 8:00 AM (PM1: 37.3/100).
When is air pollution at its worst in Higashi-ōsaka?
The biggest local contributors to pollution in Higashi-ōsaka are traffic emissions and manufacturing and food processing, particularly once windblown dust events occur. Strong seasonal winds can lift dust from the surrounding dry terrain and push particulate levels sharply higher. Sea breezes typically keep conditions in check, except during still weather.
Are air quality levels in Higashi-ōsaka 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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