Worst air pollution Olomouc, today and tomorrow
Today (20 September): Air quality in Olomouc is moderate. AQI and PM2.5 are moderate; PM10, NO2, and PM1 are fair; O3, SO2, CO, and HCHO are good. Pollution peaks around 8:00 AM (PM2.5: 40.8/100).
Tomorrow (21 September 2026): Air quality in Olomouc is good. AQI improves to good; PM2.5 decreases to good; PM10 decreases to good; NO2 decreases to good; PM1 decreases to good; all other pollutants stay as today. Pollution peaks around 10:00 AM (PM2.5: 13.9/100). 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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Olomouc's air quality reflects the Moravian plain position in the Morava river valley, with vehicle traffic on the R35 expressway and surrounding manufacturing and university research industry contributing local sources. Winter residential wood and coal burning generates elevated PM2.5, while the flat Haná plain generally allows reasonable wind dispersal on most days and the surrounding Jeseníky and Carpathian ranges create topographic variation throughout the year.
Today - 20 September | Pollution peaks at 08:00
AQI:
Moderate
40.8/100
PM2.5 (fine particles):
Moderate
40.8/100
PM10 (coarse particles):
Fair
20.9/100
NO2 (nitrogen dioxide):
Fair
26.3/100
O3 (ozone):
Good
18.4/100
SO2 (sulfur dioxide):
Good
1.9/100
CO (carbon monoxide):
Good
1.3/100
HCHO (formaldehyde):
Good
3.6/100
PM1 (ultrafine particles):
Fair
24.1/100
Levels show the poorest local air quality during the day
Tomorrow - 21 September | Pollution peaks at 10:00
AQI:
Good
13.9/100
PM2.5 (fine particles):
Good
13.9/100
PM10 (coarse particles):
Good
8.4/100
NO2 (nitrogen dioxide):
Good
7.6/100
O3 (ozone):
Good
13.5/100
SO2 (sulfur dioxide):
Good
0.9/100
CO (carbon monoxide):
Good
0.7/100
HCHO (formaldehyde):
Good
1.7/100
PM1 (ultrafine particles):
Good
4.3/100
Pollen forecast in Olomouc
View pollen forecastFrequently Asked Questions
Is air quality bad in Olomouc right now?
On 20 September 2026, overall air quality in Olomouc is moderate. AQI is the main air quality indicator at 40.8/100. Pollution peaks around 8:00 AM (PM2.5: 40.8/100).
Will air quality be worse tomorrow in Olomouc?
On 21 September 2026, air quality conditions in Olomouc will be better than today, with AQI forecast at good at 13.9/100. Pollution peaks around 10:00 AM (PM2.5: 13.9/100).
When is air pollution at its worst in Olomouc?
Air quality dips in Olomouc mostly track local combined tree and grass pollen peaks and periods of vehicle traffic on the R35 expressway and neighbouring manufacturing and university research industry; the picture usually improves again once the season turns.
Are air quality levels in Olomouc 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: 20 September 2026 at 14:33 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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