Worst air pollution Kościan, today and tomorrow
Today (9 August): Air quality in Kościan is fair. AQI, NO2, and O3 are fair; PM2.5, PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 5:00 PM (O3: 37.7/100).
Tomorrow (10 August 2026): Air quality in Kościan is medium. AQI improves to medium; NO2 decreases to good; O3 decreases to medium; all other pollutants stay as today. Pollution peaks around 2:00 PM (O3: 49.1/100). Airmine updates local air quality forecasts four times daily.
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The Obra River location of Kościan plays the biggest role in local air quality, where sugar-beet farmland of the Wielkopolska lowland is the main local emissions source, compounded by traffic on the surrounding expressway network. Overall, Kościan's readings sit close to the regional Wielkopolskie average for most of the year.
Today - 9 August | Pollution peaks at 17:00
AQI:
Fair
37.7/100
PM2.5 (fine particles):
Good
11.3/100
PM10 (coarse particles):
Good
3.7/100
NO2 (nitrogen dioxide):
Fair
20.2/100
O3 (ozone):
Fair
37.7/100
SO2 (sulfur dioxide):
Good
5.2/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
3.5/100
PM1 (ultrafine particles):
Good
10.8/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 14:00
AQI:
Medium
49.1/100
PM2.5 (fine particles):
Good
15.3/100
PM10 (coarse particles):
Good
7.6/100
NO2 (nitrogen dioxide):
Good
13.7/100
O3 (ozone):
Medium
49.1/100
SO2 (sulfur dioxide):
Good
7.2/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
5.6/100
PM1 (ultrafine particles):
Good
12.8/100
Pollen forecast in Kościan
View pollen forecastFrequently Asked Questions
Is air quality bad in Kościan right now?
On 9 August 2026, overall air quality in Kościan is fair. AQI is the main air quality indicator at 37.7/100. Pollution peaks around 5:00 PM (O3: 37.7/100).
Will air quality be worse tomorrow in Kościan?
On 10 August 2026, air quality conditions in Kościan will be better than today, with AQI forecast at medium at 49.1/100. Pollution peaks around 2:00 PM (O3: 49.1/100).
When is air pollution at its worst in Kościan?
Air quality dips in Kościan mostly track when oak and linden pollen peaks and during stretches of sugar-beet farmland of the Wielkopolska lowland; conditions generally ease once the season shifts and rainfall or stronger winds return to clear the air across the wider area.
Are air quality levels in Kościan 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: 10 August 2026 at 02:34 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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