Worst air pollution Hanamaki Onsen, today and tomorrow
Today (21 September): Air quality in Hanamaki Onsen is fair. AQI, PM2.5, NO2, and PM1 are fair; PM10, O3, SO2, CO, and HCHO are good. Pollution peaks around 1:00 AM (PM2.5: 24.3/100).
Tomorrow (22 September 2026): Air quality in Hanamaki Onsen is fair. O3 increases to fair; all other pollutants stay as today. Pollution peaks around 3:00 PM (O3: 30.5/100). 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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Hanamaki Onsen's air quality benefits from its exceptional Iwate Prefecture Kitakami River valley hot spring position surrounded by the Kitakami highland forests, with consistent mountain valley breezes providing clean natural ventilation. Vehicle traffic on surrounding roads and the Kenji Miyazawa literary heritage tourism, hot spring resort, and agricultural corridor contribute modest local sources, while the outstanding highland forest setting generally maintains Hanamaki among Iwate's more pleasantly ventilated highland resort city environments throughout most of the year.
Today - 21 September | Pollution peaks at 01:00
AQI:
Fair
24.3/100
PM2.5 (fine particles):
Fair
24.3/100
PM10 (coarse particles):
Good
13.8/100
NO2 (nitrogen dioxide):
Fair
22.2/100
O3 (ozone):
Good
13.3/100
SO2 (sulfur dioxide):
Good
1.9/100
CO (carbon monoxide):
Good
0.7/100
HCHO (formaldehyde):
Good
5.6/100
PM1 (ultrafine particles):
Fair
20.4/100
Levels show the poorest local air quality during the day
Tomorrow - 22 September | Pollution peaks at 15:00
AQI:
Fair
30.5/100
PM2.5 (fine particles):
Fair
21.9/100
PM10 (coarse particles):
Good
12.7/100
NO2 (nitrogen dioxide):
Fair
24.4/100
O3 (ozone):
Fair
30.5/100
SO2 (sulfur dioxide):
Good
2.6/100
CO (carbon monoxide):
Good
1.1/100
HCHO (formaldehyde):
Good
8.6/100
PM1 (ultrafine particles):
Fair
20.7/100
Frequently Asked Questions
Is air quality bad in Hanamaki Onsen right now?
On 21 September 2026, overall air quality in Hanamaki Onsen is fair. AQI is the main air quality indicator at 24.3/100. Pollution peaks around 1:00 AM (PM2.5: 24.3/100).
Will air quality be worse tomorrow in Hanamaki Onsen?
On 22 September 2026, air quality conditions in Hanamaki Onsen will be similar to today, with AQI forecast at fair at 30.5/100. Pollution peaks around 3:00 PM (O3: 30.5/100).
When is air pollution at its worst in Hanamaki Onsen?
In Hanamaki Onsen, vehicle traffic, farming and agricultural processing, and tourism-related traffic are the main local sources, with conditions worsening when still air allows pollutants to build up. Local weather patterns add further variation on top of these sources. Background emissions and local weather both play a role in day-to-day changes.
Are air quality levels in Hanamaki Onsen 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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