Worst air pollution St. Moritz Bad - St. Moritz, today and tomorrow
Today (16 July): Air quality in St. Moritz Bad is medium. AQI and O3 are medium; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 7:00 PM (O3: 40.8/100).
Tomorrow (17 July 2026): Air quality in St. Moritz Bad is medium. All pollutants stay as today. Pollution peaks around 9:00 AM (O3: 41.0/100). 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
Use our Strava plugin to check your own exposure.
St. Moritz Bad's air quality benefits from its lakeside high-altitude position, with the historic spa quarter's more moderate tourist traffic than Dorf keeping conditions generally very clean.
Today - 16 July | Pollution peaks at 19:00
AQI:
Medium
40.8/100
PM2.5 (fine particles):
Good
7.3/100
PM10 (coarse particles):
Good
2.5/100
NO2 (nitrogen dioxide):
Good
19.5/100
O3 (ozone):
Medium
40.8/100
SO2 (sulfur dioxide):
Good
0.8/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
4.2/100
PM1 (ultrafine particles):
Good
9.5/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 09:00
AQI:
Medium
41.0/100
PM2.5 (fine particles):
Good
11.8/100
PM10 (coarse particles):
Good
8.1/100
NO2 (nitrogen dioxide):
Good
13.4/100
O3 (ozone):
Medium
41.0/100
SO2 (sulfur dioxide):
Good
1.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
4.8/100
PM1 (ultrafine particles):
Good
14.3/100
Other Landmarks in St. Moritz
Sports venues in St. Moritz
Frequently Asked Questions
Is air quality bad in St. Moritz Bad right now?
On 16 July 2026, overall air quality in St. Moritz Bad is medium. AQI is the main air quality indicator at 40.8/100. Pollution peaks around 7:00 PM (O3: 40.8/100).
Will air quality be worse tomorrow in St. Moritz Bad?
On 17 July 2026, air quality conditions in St. Moritz Bad will be similar to today, with AQI forecast at medium at 41.0/100. Pollution peaks around 9:00 AM (O3: 41.0/100).
When is air pollution at its worst in St. Moritz Bad?
Poor air quality is essentially unheard of at St. Moritz Bad, given its remote Alpine valley setting. The closest thing to an exception comes during busy tourist periods, when winter tourism and seasonal traffic nudges emissions up briefly. The rest of the year, this valley sits among Switzerland's cleanest locations.
Are air quality levels in St. Moritz Bad 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?
Check air quality in other popular cities:
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