Worst air pollution Ústí nad Labem, today and tomorrow
Today (10 August): Air quality in Ústí nad Labem is fair. NO2 is fair; AQI and O3 are medium; PM2.5, PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 12:00 PM (O3: 43.9/100).
Tomorrow (11 August 2026): Air quality in Ústí nad Labem is fair. AQI worsens to fair; O3 increases to fair; all other pollutants stay as today. Pollution peaks around 12:00 AM (O3: 28.5/100). Airmine updates local air quality forecasts four times daily.
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Ústí nad Labem's air quality faces significant challenges from the Elbe valley's topographic enclosure between the Czech Central Highlands and the Ore Mountains, combined with coal mining and chemical industry legacy emissions from the Most-Chomutov North Bohemian industrial corridor upwind. Vehicle traffic on the D8 motorway and winter residential coal burning compound the industrial background, making Ústí one of the Czech Republic's more persistently challenged air quality environments.
Today - 10 August | Pollution peaks at 12:00
AQI:
Medium
43.9/100
PM2.5 (fine particles):
Good
14.7/100
PM10 (coarse particles):
Good
4.3/100
NO2 (nitrogen dioxide):
Fair
32.7/100
O3 (ozone):
Medium
43.9/100
SO2 (sulfur dioxide):
Good
10.3/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
5.5/100
PM1 (ultrafine particles):
Good
19.1/100
Levels show the poorest local air quality during the day
Tomorrow - 11 August | Pollution peaks at 00:00
AQI:
Fair
28.5/100
PM2.5 (fine particles):
Good
8.1/100
PM10 (coarse particles):
Good
2.6/100
NO2 (nitrogen dioxide):
Fair
25.4/100
O3 (ozone):
Fair
28.5/100
SO2 (sulfur dioxide):
Good
6.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
4.5/100
PM1 (ultrafine particles):
Good
8.7/100
Pollen forecast in Ústí nad Labem
View pollen forecastFrequently Asked Questions
Is air quality bad in Ústí nad Labem right now?
On 10 August 2026, overall air quality in Ústí nad Labem is fair. NO2 is the main pollutant at 32.7/100. Pollution peaks around 12:00 PM (O3: 43.9/100).
Will air quality be worse tomorrow in Ústí nad Labem?
On 11 August 2026, air quality conditions in Ústí nad Labem will be similar to today, with AQI forecast at fair at 28.5/100. Pollution peaks around 12:00 AM (O3: 28.5/100).
When is air pollution at its worst in Ústí nad Labem?
Air quality dips in Ústí nad Labem mostly track local tree and grass allergens peaks and periods of vehicle traffic on the D8 motorway and winter residential coal burning compound the industrial background; a change of season or a spell of wind usually clears things up again.
Are air quality levels in Ústí nad Labem 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 08:45 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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