Worst air pollution Opava, today and tomorrow
Today (9 August): Air quality in Opava is medium. AQI, NO2, and O3 are medium; PM2.5, PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 5:00 PM (O3: 47.5/100).
Tomorrow (10 August 2026): Air quality in Opava is fair. PM1 increases to fair; all other pollutants stay as today. Pollution peaks around 2:00 PM (O3: 45.5/100). Airmine updates local air quality forecasts four times daily.
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Opava's air quality reflects the Opava river valley in the Czech-Polish Silesian border region, with vehicle traffic on the R46 expressway and surrounding manufacturing industry contributing local sources alongside winter residential coal burning. The Jeseníky mountains to the south create topographic variation, while the proximity to the Czech-Polish Ostrava-Karviná industrial district elevates regional background PM2.5 significantly and the coal dependency in the broader Upper Silesian corridor makes Opava one of the Czech Republic's more industrially influenced border cities.
Today - 9 August | Pollution peaks at 17:00
AQI:
Medium
47.5/100
PM2.5 (fine particles):
Good
17.0/100
PM10 (coarse particles):
Good
5.4/100
NO2 (nitrogen dioxide):
Medium
43.7/100
O3 (ozone):
Medium
47.5/100
SO2 (sulfur dioxide):
Good
15.6/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
4.3/100
PM1 (ultrafine particles):
Good
18.1/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 14:00
AQI:
Medium
45.5/100
PM2.5 (fine particles):
Good
16.6/100
PM10 (coarse particles):
Good
4.6/100
NO2 (nitrogen dioxide):
Medium
42.9/100
O3 (ozone):
Medium
45.5/100
SO2 (sulfur dioxide):
Good
12.3/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
5.9/100
PM1 (ultrafine particles):
Fair
21.3/100
Pollen forecast in Opava
View pollen forecastFrequently Asked Questions
Is air quality bad in Opava right now?
On 9 August 2026, overall air quality in Opava is medium. AQI is the main air quality indicator at 47.5/100. Pollution peaks around 5:00 PM (O3: 47.5/100).
Will air quality be worse tomorrow in Opava?
On 10 August 2026, air quality conditions in Opava will be worse than today, with PM1 forecast at fair at 21.3/100. Pollution peaks around 2:00 PM (O3: 45.5/100).
When is air pollution at its worst in Opava?
Residents in Opava are most likely to spot reduced air quality when fringe oak and birch pollen peaks, or due to vehicle traffic on the R46 expressway and local manufacturing industry; conditions generally improve once the season shifts and rainfall or stronger winds return.
Are air quality levels in Opava 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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