Worst air pollution Olten, today and tomorrow
Today (16 July): Air quality in Olten is medium. AQI, NO2, and O3 are medium; PM2.5, PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 3:00 PM (O3: 44.5/100).
Tomorrow (17 July 2026): Air quality in Olten is fair. PM2.5 increases to fair; O3 increases to fair; PM1 increases to fair; all other pollutants stay as today. Pollution peaks around 5:00 AM (NO2: 49.4/100). Airmine updates local air quality forecasts four times daily.
For long term forecasts and maps, see the Airmine app
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
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Olten's air quality reflects its position as Switzerland's main rail junction, with rail and vehicle traffic on the A1 motorway contributing local sources within this Jura-foothill Aare valley setting.
Today - 16 July | Pollution peaks at 15:00
AQI:
Medium
44.5/100
PM2.5 (fine particles):
Good
15.1/100
PM10 (coarse particles):
Good
5.8/100
NO2 (nitrogen dioxide):
Medium
43.7/100
O3 (ozone):
Medium
44.5/100
SO2 (sulfur dioxide):
Good
1.3/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
5.2/100
PM1 (ultrafine particles):
Good
19.2/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 05:00
AQI:
Medium
49.4/100
PM2.5 (fine particles):
Fair
24.6/100
PM10 (coarse particles):
Good
7.9/100
NO2 (nitrogen dioxide):
Medium
49.4/100
O3 (ozone):
Fair
32.3/100
SO2 (sulfur dioxide):
Good
1.5/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
5.5/100
PM1 (ultrafine particles):
Fair
29.0/100
Pollen forecast in Olten
View pollen forecastFrequently Asked Questions
Is air quality bad in Olten right now?
On 16 July 2026, overall air quality in Olten is medium. AQI is the main air quality indicator at 44.5/100. Pollution peaks around 3:00 PM (O3: 44.5/100).
Will air quality be worse tomorrow in Olten?
On 17 July 2026, air quality conditions in Olten will be worse than today, with O3 forecast at fair at 32.3/100. Pollution peaks around 5:00 AM (NO2: 49.4/100).
When is air pollution at its worst in Olten?
At Olten, winter brings the poorest readings, as vehicle traffic and farmland activity build up over the farmland whenever the usual winds fail to clear it. The rest of the year sees much better conditions across this stretch of the Mittelland, with summer's ozone spikes limited to the hottest, stillest days.
Are air quality levels in Olten 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.
Want to see air quality forecasts for other cities in Switzerland?
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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