Worst air pollution Sarnen, today and tomorrow
Today (16 July): Air quality in Sarnen is medium. AQI, NO2, and O3 are medium; PM2.5, PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 11:00 PM (NO2: 51.6/100).
Tomorrow (17 July 2026): Air quality in Sarnen is fair. O3 increases to fair; all other pollutants stay as today. Pollution peaks around 12:00 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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Sarnen's air quality benefits from its lakeside Alpine setting in Obwalden, with limited traffic and light industry the primary local sources amid otherwise clean, forested mountain surroundings.
Today - 16 July | Pollution peaks at 23:00
AQI:
Medium
51.6/100
PM2.5 (fine particles):
Good
13.1/100
PM10 (coarse particles):
Good
6.7/100
NO2 (nitrogen dioxide):
Medium
51.6/100
O3 (ozone):
Medium
42.5/100
SO2 (sulfur dioxide):
Good
1.6/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
3.2/100
PM1 (ultrafine particles):
Good
15.4/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 00:00
AQI:
Medium
49.4/100
PM2.5 (fine particles):
Good
10.6/100
PM10 (coarse particles):
Good
7.9/100
NO2 (nitrogen dioxide):
Medium
49.4/100
O3 (ozone):
Fair
32.4/100
SO2 (sulfur dioxide):
Good
1.2/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
2.4/100
PM1 (ultrafine particles):
Good
11.0/100
Pollen forecast in Sarnen
View pollen forecastAir quality forecasts for neighbourhoods and landmarks in Sarnen
Sports venues in Sarnen
Frequently Asked Questions
Is air quality bad in Sarnen right now?
On 16 July 2026, overall air quality in Sarnen is medium. AQI is the main air quality indicator at 51.6/100. Pollution peaks around 11:00 PM (NO2: 51.6/100).
Will air quality be worse tomorrow in Sarnen?
On 17 July 2026, air quality conditions in Sarnen will be worse than today, with O3 forecast at fair at 32.4/100. Pollution peaks around 12:00 AM (NO2: 49.4/100).
When is air pollution at its worst in Sarnen?
The worst stretch for air quality at Sarnen tends to be a calm winter day, as vehicle traffic and lake-season tourism gather along the lakeshore under a layer of trapped cold air. Once spring arrives, dispersion improves steadily, and summer stays largely clear except during rare heatwaves; autumn tends to be another comparatively mild, steady stretch.
Are air quality levels in Sarnen 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