Worst air pollution Bratislava, today and tomorrow
Today (9 August): Air quality in Bratislava is medium. AQI and O3 are medium; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 4:00 PM (O3: 41.4/100).
Tomorrow (10 August 2026): Air quality in Bratislava is medium. All pollutants stay as today. Pollution peaks around 5:00 PM (O3: 47.7/100). Airmine updates local air quality forecasts four times daily.
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Bratislava's air quality faces winter challenges, with residential heating and vehicle traffic on the D1 and D2 motorway interchange generating elevated PM2.5 and NO₂. The Danube river corridor provides ventilation on westerly winds, while the Little Carpathian hills to the north and the Pannonian plain to the south create topographic variation in pollution exposure across this compact Central European capital.
Today - 9 August | Pollution peaks at 16:00
AQI:
Medium
41.4/100
PM2.5 (fine particles):
Good
8.2/100
PM10 (coarse particles):
Good
2.3/100
NO2 (nitrogen dioxide):
Good
14.6/100
O3 (ozone):
Medium
41.4/100
SO2 (sulfur dioxide):
Good
3.9/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
4.9/100
PM1 (ultrafine particles):
Good
10.2/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 17:00
AQI:
Medium
47.7/100
PM2.5 (fine particles):
Good
7.9/100
PM10 (coarse particles):
Good
3.6/100
NO2 (nitrogen dioxide):
Good
12.4/100
O3 (ozone):
Medium
47.7/100
SO2 (sulfur dioxide):
Good
1.7/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
8.5/100
PM1 (ultrafine particles):
Good
8.1/100
Pollen forecast in Bratislava
View pollen forecastSports venues in Bratislava
Frequently Asked Questions
Is air quality bad in Bratislava right now?
On 9 August 2026, overall air quality in Bratislava is medium. AQI is the main air quality indicator at 41.4/100. Pollution peaks around 4:00 PM (O3: 41.4/100).
Will air quality be worse tomorrow in Bratislava?
On 10 August 2026, air quality conditions in Bratislava will be similar to today, with AQI forecast at medium at 47.7/100. Pollution peaks around 5:00 PM (O3: 47.7/100).
When is air pollution at its worst in Bratislava?
People in Bratislava tend to notice reduced air quality when local tree and grass allergens peaks, or because of residential heating and vehicle traffic on the D1 and D2 motorway interchange; wind and rain both help clear the air fairly quickly here.
Are air quality levels in Bratislava 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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