Worst air pollution Klagenfurt, today and tomorrow
Today (16 July): Air quality in Klagenfurt 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: 43.6/100).
Tomorrow (17 July 2026): Air quality in Klagenfurt is fair. All pollutants stay as today. Pollution peaks around 1:00 PM (O3: 45.3/100). 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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Klagenfurt's air quality faces Austria's second most severe urban air quality challenge, with the city's enclosed Klagenfurt basin position surrounded by the Karawanken Alps to the south and the Nock Mountains to the north creating a significant topographic pollution trap. Vehicle traffic on the A2 motorway and winter residential wood burning generate elevated PM2.5 under frequent inversions, while the Wörthersee lake breeze provides distinctive seasonal ventilation patterns.
Today - 16 July | Pollution peaks at 12:00
AQI:
Medium
43.6/100
PM2.5 (fine particles):
Good
9.7/100
PM10 (coarse particles):
Good
4.4/100
NO2 (nitrogen dioxide):
Fair
21.7/100
O3 (ozone):
Medium
43.6/100
SO2 (sulfur dioxide):
Good
0.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
10.4/100
PM1 (ultrafine particles):
Good
9.9/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 13:00
AQI:
Medium
45.3/100
PM2.5 (fine particles):
Good
12.6/100
PM10 (coarse particles):
Good
4.3/100
NO2 (nitrogen dioxide):
Fair
22.8/100
O3 (ozone):
Medium
45.3/100
SO2 (sulfur dioxide):
Good
0.7/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
15.9/100
PM1 (ultrafine particles):
Good
16.5/100
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Frequently Asked Questions
Is air quality bad in Klagenfurt right now?
On 16 July 2026, overall air quality in Klagenfurt is fair. NO2 is the main pollutant at 21.7/100. Pollution peaks around 12:00 PM (O3: 43.6/100).
Will air quality be worse tomorrow in Klagenfurt?
On 17 July 2026, air quality conditions in Klagenfurt will be similar to today, with NO2 forecast at fair at 22.8/100. Pollution peaks around 1:00 PM (O3: 45.3/100).
When is air pollution at its worst in Klagenfurt?
Air quality at Klagenfurt is usually worst on calm winter mornings, when vehicle traffic and lake-season tourism settle under a temperature inversion typical of the enclosed Carinthian basin. Summer generally brings much better dispersion, aside from occasional ozone spikes during hot, still spells. Spring and autumn tend to be the steadiest, cleanest months of the year.
Are air quality levels in Klagenfurt 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.
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Data provided by Airmine — Last update: 16 July 2026 at 10:33 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.
For long term forecasts and maps, see the Airmine app