Worst air pollution Oulu, today and tomorrow
Today (20 September): Air quality in Oulu is good. AQI, PM2.5, PM10, NO2, O3, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 3:00 AM (O3: 15.7/100).
Tomorrow (21 September 2026): Air quality in Oulu is good. All pollutants stay as today. Pollution peaks around 12:00 AM (O3: 14.5/100). 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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Oulu's air quality is excellent by European standards, benefiting from clean Arctic and Baltic airflows that dominate conditions throughout most of the year in this northern Finnish city. The primary concerns are road dust from studded winter tyres contributing elevated PM10 in spring, residential wood burning during the long cold winters adding localised PM2.5, while the surrounding Bothnian Bay and northern Finnish forest provide outstanding clean-air background conditions that make Oulu one of Europe's cleaner major cities year-round.
Today - 20 September | Pollution peaks at 03:00
AQI:
Good
15.7/100
PM2.5 (fine particles):
Good
6.5/100
PM10 (coarse particles):
Good
2.7/100
NO2 (nitrogen dioxide):
Good
8.4/100
O3 (ozone):
Good
15.7/100
SO2 (sulfur dioxide):
Good
0.3/100
CO (carbon monoxide):
Good
0.6/100
HCHO (formaldehyde):
Good
0.7/100
PM1 (ultrafine particles):
Good
1.6/100
Levels show the poorest local air quality during the day
Tomorrow - 21 September | Pollution peaks at 00:00
AQI:
Good
14.5/100
PM2.5 (fine particles):
Good
8.6/100
PM10 (coarse particles):
Good
3.4/100
NO2 (nitrogen dioxide):
Good
8.7/100
O3 (ozone):
Good
14.5/100
SO2 (sulfur dioxide):
Good
0.4/100
CO (carbon monoxide):
Good
0.6/100
HCHO (formaldehyde):
Good
0.7/100
PM1 (ultrafine particles):
Good
2.6/100
Pollen forecast in Oulu
View pollen forecastFrequently Asked Questions
Is air quality bad in Oulu right now?
On 20 September 2026, overall air quality in Oulu is good. AQI is the main air quality indicator at 15.7/100. Pollution peaks around 3:00 AM (O3: 15.7/100).
Will air quality be worse tomorrow in Oulu?
On 21 September 2026, air quality conditions in Oulu will be similar to today, with AQI forecast at good at 14.5/100. Pollution peaks around 12:00 AM (O3: 14.5/100).
When is air pollution at its worst in Oulu?
In Oulu, reduced air quality is most noticeable when local combined tree and grass pollen peaks, and on days affected by studded winter tyres; outside those spells, this remains one of the more consistently clean-air places to be.
Are air quality levels in Oulu 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.
Want to see air quality forecasts for other cities in Finland?
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Data provided by Airmine — Last update: 20 September 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.
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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