Worst air pollution Dornbirn, today and tomorrow
Today (20 September): Air quality in Dornbirn is moderate. AQI and O3 are moderate; PM2.5, PM10, NO2, and PM1 are fair; SO2, CO, and HCHO are good. Pollution peaks around 4:00 PM (O3: 57.4/100).
Tomorrow (21 September 2026): Air quality in Dornbirn is fair. AQI improves to fair; PM2.5 decreases to good; PM10 decreases to good; O3 decreases to fair; PM1 decreases to good; all other pollutants stay as today. Pollution peaks around 6:00 PM (O3: 33.6/100). 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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Dornbirn's air quality reflects its Rhine valley position as Vorarlberg's largest city, with vehicle traffic and legacy textile manufacturing contributing local sources. The valley setting can trap emissions under calm inversions.
Today - 20 September | Pollution peaks at 16:00
AQI:
Moderate
57.4/100
PM2.5 (fine particles):
Fair
38.7/100
PM10 (coarse particles):
Fair
24.1/100
NO2 (nitrogen dioxide):
Fair
26.7/100
O3 (ozone):
Moderate
57.4/100
SO2 (sulfur dioxide):
Good
0.6/100
CO (carbon monoxide):
Good
0.9/100
HCHO (formaldehyde):
Good
3.3/100
PM1 (ultrafine particles):
Fair
21.2/100
Levels show the poorest local air quality during the day
Tomorrow - 21 September | Pollution peaks at 18:00
AQI:
Fair
33.6/100
PM2.5 (fine particles):
Good
16.4/100
PM10 (coarse particles):
Good
11.3/100
NO2 (nitrogen dioxide):
Fair
20.2/100
O3 (ozone):
Fair
33.6/100
SO2 (sulfur dioxide):
Good
0.8/100
CO (carbon monoxide):
Good
0.7/100
HCHO (formaldehyde):
Good
3.2/100
PM1 (ultrafine particles):
Good
5.6/100
Pollen forecast in Dornbirn
View pollen forecastAir quality forecasts for neighbourhoods and landmarks in Dornbirn
Frequently Asked Questions
Is air quality bad in Dornbirn right now?
On 20 September 2026, overall air quality in Dornbirn is moderate. AQI is the main air quality indicator at 57.4/100. Pollution peaks around 4:00 PM (O3: 57.4/100).
Will air quality be worse tomorrow in Dornbirn?
On 21 September 2026, air quality conditions in Dornbirn will be better than today, with AQI forecast at fair at 33.6/100. Pollution peaks around 6:00 PM (O3: 33.6/100).
When is air pollution at its worst in Dornbirn?
Dornbirn's air quality is at its poorest on calm winter mornings, when vehicle traffic and cross-border commuting settle before lake breezes off the Bodensee return. Conditions generally stay good through spring and summer, aside from occasional ozone peaks in prolonged heat. Autumn tends to be another steady, comparatively clean stretch.
Are air quality levels in Dornbirn 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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