Worst air pollution Mikkeli, today and tomorrow
Today (9 August): Air quality in Mikkeli is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 11:00 PM (O3: 23.3/100).
Tomorrow (10 August 2026): Air quality in Mikkeli is fair. All pollutants stay as today. Pollution peaks around 10:00 PM (O3: 32.6/100). Airmine updates local air quality forecasts four times daily.
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Mikkeli's air quality is excellent by European standards, with the Finnish Lake Saimaa system's clean boreal forest airflows and the surrounding lake district providing outstanding natural ventilation. Vehicle traffic on the E63 motorway and wood-burning stoves during the long cold winters are the primary local sources, while the surrounding Finnish lake and forest landscape maintains Mikkeli among Finland's cleanest regional cities throughout most of the year.
Today - 9 August | Pollution peaks at 23:00
AQI:
Fair
23.3/100
PM2.5 (fine particles):
Good
5.5/100
PM10 (coarse particles):
Good
2.0/100
NO2 (nitrogen dioxide):
Good
10.2/100
O3 (ozone):
Fair
23.3/100
SO2 (sulfur dioxide):
Good
2.3/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
2.1/100
PM1 (ultrafine particles):
Good
3.9/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 22:00
AQI:
Fair
32.6/100
PM2.5 (fine particles):
Good
11.6/100
PM10 (coarse particles):
Good
3.5/100
NO2 (nitrogen dioxide):
Good
9.8/100
O3 (ozone):
Fair
32.6/100
SO2 (sulfur dioxide):
Good
4.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
1.9/100
PM1 (ultrafine particles):
Good
13.1/100
Pollen forecast in Mikkeli
View pollen forecastFrequently Asked Questions
Is air quality bad in Mikkeli right now?
On 9 August 2026, overall air quality in Mikkeli is fair. AQI is the main air quality indicator at 23.3/100. Pollution peaks around 11:00 PM (O3: 23.3/100).
Will air quality be worse tomorrow in Mikkeli?
On 10 August 2026, air quality conditions in Mikkeli will be similar to today, with AQI forecast at fair at 32.6/100. Pollution peaks around 10:00 PM (O3: 32.6/100).
When is air pollution at its worst in Mikkeli?
Reduced air quality in Mikkeli is most likely when birch and pine pollen peaks, alongside periods of vehicle traffic on the E63 motorway and wood-burning stoves during the long cold winters; outside those spells, this remains one of the more consistently clean-air places to be.
Are air quality levels in Mikkeli 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: 9 August 2026 at 20:27 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.
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