Worst air pollution Verzasca Valley - Locarno, today and tomorrow
Today (16 July): Air quality in Verzasca Valley is medium. AQI and O3 are medium; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 6:00 PM (O3: 42.0/100).
Tomorrow (17 July 2026): Air quality in Verzasca Valley is fair. AQI worsens to fair; O3 increases to fair; all other pollutants stay as today. Pollution peaks around 3:00 PM (O3: 38.2/100). 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.
Verzasca Valley's air quality benefits from its position in a remote Ticino side-valley near Locarno, with minimal traffic keeping this scenic granite gorge among the region's cleanest environments.
Today - 16 July | Pollution peaks at 18:00
AQI:
Medium
42.0/100
PM2.5 (fine particles):
Good
5.0/100
PM10 (coarse particles):
Good
2.0/100
NO2 (nitrogen dioxide):
Good
0/100
O3 (ozone):
Medium
42.0/100
SO2 (sulfur dioxide):
Good
0/100
CO (carbon monoxide):
Good
0/100
HCHO (formaldehyde):
Good
5.6/100
PM1 (ultrafine particles):
Good
5.4/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 15:00
AQI:
Fair
38.2/100
PM2.5 (fine particles):
Good
5.8/100
PM10 (coarse particles):
Good
3.3/100
NO2 (nitrogen dioxide):
Good
0/100
O3 (ozone):
Fair
38.2/100
SO2 (sulfur dioxide):
Good
0/100
CO (carbon monoxide):
Good
0/100
HCHO (formaldehyde):
Good
10.1/100
PM1 (ultrafine particles):
Good
6.3/100
Other Landmarks in Locarno
Frequently Asked Questions
Is air quality bad in Verzasca Valley right now?
On 16 July 2026, overall air quality in Verzasca Valley is medium. AQI is the main air quality indicator at 42.0/100. Pollution peaks around 6:00 PM (O3: 42.0/100).
Will air quality be worse tomorrow in Verzasca Valley?
On 17 July 2026, air quality conditions in Verzasca Valley will be worse than today, with AQI forecast at fair at 38.2/100. Pollution peaks around 3:00 PM (O3: 38.2/100).
When is air pollution at its worst in Verzasca Valley?
Verzasca Valley's poorest air quality shows up when winter calm lets vehicle traffic and tourism accumulate in this mild valley rather than clearing with the usual breeze. Summer usually brings much better dispersion in this mild climate, aside from the odd ozone spike during a hot, still afternoon, with spring and autumn typically the steadiest.
Are air quality levels in Verzasca Valley 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