Worst air pollution Mutsu, today and tomorrow
Today (21 September): Air quality in Mutsu is fair. AQI and PM1 are fair; PM2.5, PM10, NO2, O3, SO2, CO, and HCHO are good. Pollution peaks around 11:00 PM (PM1: 25.9/100).
Tomorrow (22 September 2026): Air quality in Mutsu is fair. O3 increases to fair; all other pollutants stay as today. Pollution peaks around 12:00 AM (PM1: 24.3/100). 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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Mutsu's air quality benefits from its exceptional Aomori Prefecture Ominato Bay and Tsugaru Strait coastal position, with consistent Pacific and Sea of Japan maritime breezes providing reliable ventilation. Vehicle traffic on surrounding roads and the JMSDF Ominato base naval operations, fishing, and nuclear fuel cycle facility corridor contribute local sources, while the outstanding coastal exposure and the Shimokita Peninsula's pristine wilderness setting generally maintain Mutsu at moderate to good conditions throughout most of the year.
Today - 21 September | Pollution peaks at 23:00
AQI:
Fair
25.9/100
PM2.5 (fine particles):
Good
12.0/100
PM10 (coarse particles):
Good
7.9/100
NO2 (nitrogen dioxide):
Good
7.0/100
O3 (ozone):
Good
14.7/100
SO2 (sulfur dioxide):
Good
1.8/100
CO (carbon monoxide):
Good
0.5/100
HCHO (formaldehyde):
Good
6.1/100
PM1 (ultrafine particles):
Fair
25.9/100
Levels show the poorest local air quality during the day
Tomorrow - 22 September | Pollution peaks at 00:00
AQI:
Fair
24.3/100
PM2.5 (fine particles):
Good
11.3/100
PM10 (coarse particles):
Good
10.4/100
NO2 (nitrogen dioxide):
Good
4.6/100
O3 (ozone):
Fair
23.5/100
SO2 (sulfur dioxide):
Good
1.9/100
CO (carbon monoxide):
Good
0.6/100
HCHO (formaldehyde):
Good
5.7/100
PM1 (ultrafine particles):
Fair
24.3/100
Frequently Asked Questions
Is air quality bad in Mutsu right now?
On 21 September 2026, overall air quality in Mutsu is fair. AQI is the main air quality indicator at 25.9/100. Pollution peaks around 11:00 PM (PM1: 25.9/100).
Will air quality be worse tomorrow in Mutsu?
On 22 September 2026, air quality conditions in Mutsu will be similar to today, with AQI forecast at fair at 24.3/100. Pollution peaks around 12:00 AM (PM1: 24.3/100).
When is air pollution at its worst in Mutsu?
Mutsu usually sees its poorest air quality when vehicle traffic as well as port and shipping activity coincide with periods when maritime winds die down. Onshore breezes usually help clear the air, but pollution can build up when winds are light. Areas further inland without this ventilation tend to fare worse.
Are air quality levels in Mutsu 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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