Worst air pollution Hietzing - Vienna, today and tomorrow
Today (20 September): Air quality in Hietzing is fair. AQI, NO2, and O3 are fair; PM2.5, PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 9:00 AM (NO2: 25.2/100).
Tomorrow (21 September 2026): Air quality in Hietzing is fair. NO2 decreases to good; all other pollutants stay as today. Pollution peaks around 12:00 AM (O3: 20.9/100). Airmine updates local air quality forecasts four times daily.
Get the full experience in the Airmine app.
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
Follow your pollen exposure and performance with the free Airmine–Strava integration. See your pollen and air quality exposure for every Strava activity.
Hietzing's air quality benefits from its position adjacent to the extensive Schönbrunn gardens and Lainzer Tiergarten forest, providing substantial natural buffering. Vehicle traffic on residential streets is the primary local source.
Today - 20 September | Pollution peaks at 09:00
AQI:
Fair
25.2/100
PM2.5 (fine particles):
Good
15.7/100
PM10 (coarse particles):
Good
9.7/100
NO2 (nitrogen dioxide):
Fair
25.2/100
O3 (ozone):
Fair
24.9/100
SO2 (sulfur dioxide):
Good
0.9/100
CO (carbon monoxide):
Good
0.8/100
HCHO (formaldehyde):
Good
7.8/100
PM1 (ultrafine particles):
Good
7.1/100
Levels show the poorest local air quality during the day
Tomorrow - 21 September | Pollution peaks at 00:00
AQI:
Fair
20.9/100
PM2.5 (fine particles):
Good
9.4/100
PM10 (coarse particles):
Good
8.2/100
NO2 (nitrogen dioxide):
Good
10.4/100
O3 (ozone):
Fair
20.9/100
SO2 (sulfur dioxide):
Good
0.9/100
CO (carbon monoxide):
Good
0.7/100
HCHO (formaldehyde):
Good
2.8/100
PM1 (ultrafine particles):
Good
2.2/100
Other Landmarks in Vienna
Sports venues in Vienna
Frequently Asked Questions
Is air quality bad in Hietzing right now?
On 20 September 2026, overall air quality in Hietzing is fair. AQI is the main air quality indicator at 25.2/100. Pollution peaks around 9:00 AM (NO2: 25.2/100).
Will air quality be worse tomorrow in Hietzing?
On 21 September 2026, air quality conditions in Hietzing will be similar to today, with AQI forecast at fair at 20.9/100. Pollution peaks around 12:00 AM (O3: 20.9/100).
When is air pollution at its worst in Hietzing?
The worst air quality at Hietzing tends to show up during calm winter conditions, when emissions from vehicle traffic and residential heating across the city build up under a basin inversion. Conditions generally improve through spring, and while summer heat can raise ozone briefly, overall dispersion is much better than in winter. Autumn usually sits somewhere comfortably in between.
Are air quality levels in Hietzing 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.
Want to see air quality forecasts for other cities in Austria?
Check air quality in other popular cities:
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.
Get the full experience in the Airmine app.