Worst air pollution Wels, today and tomorrow
Today (9 August): Air quality in Wels is fair. AQI, NO2, and O3 are fair; PM2.5, PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 5:00 PM (O3: 39.7/100).
Tomorrow (10 August 2026): Air quality in Wels is fair. AQI improves to medium; O3 decreases to medium; all other pollutants stay as today. Pollution peaks around 1:00 PM (O3: 43.3/100). Airmine updates local air quality forecasts four times daily.
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Wels' air quality reflects the Upper Austrian Traun river valley at the Alpine foreland, with vehicle traffic on the A1 motorway and the surrounding industrial and logistics corridor contributing local sources in this major Austrian industrial city. The surrounding Alps create topographic variation, while the Alpine Föhn wind periodically delivers exceptional clean mountain air and the Traun valley provides the primary ventilation corridor on westerly winds throughout the year.
Today - 9 August | Pollution peaks at 17:00
AQI:
Fair
39.7/100
PM2.5 (fine particles):
Good
10.7/100
PM10 (coarse particles):
Good
3.0/100
NO2 (nitrogen dioxide):
Fair
20.6/100
O3 (ozone):
Fair
39.7/100
SO2 (sulfur dioxide):
Good
0.9/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
8.7/100
PM1 (ultrafine particles):
Good
14.2/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 13:00
AQI:
Medium
43.3/100
PM2.5 (fine particles):
Good
9.1/100
PM10 (coarse particles):
Good
5.0/100
NO2 (nitrogen dioxide):
Fair
22.3/100
O3 (ozone):
Medium
43.3/100
SO2 (sulfur dioxide):
Good
1.6/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
9.7/100
PM1 (ultrafine particles):
Good
11.0/100
Pollen forecast in Wels
View pollen forecastAir quality forecasts for neighbourhoods and landmarks in Wels
Frequently Asked Questions
Is air quality bad in Wels right now?
On 9 August 2026, overall air quality in Wels is fair. AQI is the main air quality indicator at 39.7/100. Pollution peaks around 5:00 PM (O3: 39.7/100).
Will air quality be worse tomorrow in Wels?
On 10 August 2026, air quality conditions in Wels will be similar to today, with NO2 forecast at fair at 22.3/100. Pollution peaks around 1:00 PM (O3: 43.3/100).
When is air pollution at its worst in Wels?
Winter is the trickiest season for air quality at Wels, as vehicle traffic and light industry accumulate under calm, cold morning inversions. Spring and summer bring stronger, more variable winds and generally better conditions, save for the odd hot-weather ozone peak. Autumn is typically another comparatively mild period.
Are air quality levels in Wels 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: 9 August 2026 at 20:27 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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