Worst air pollution Ascona, today and tomorrow
Today (16 July): Air quality in Ascona is medium. AQI and O3 are medium; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 5:00 PM (O3: 53.9/100).
Tomorrow (17 July 2026): Air quality in Ascona is medium. All pollutants stay as today. Pollution peaks around 3:00 PM (O3: 47.9/100). Airmine updates local air quality forecasts four times daily.
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Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
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Ascona's air quality benefits from its Lake Maggiore shoreline position in Ticino's mild southern climate, with lake breezes providing ventilation, though summer resort tourist traffic generates seasonal local emission peaks.
Today - 16 July | Pollution peaks at 17:00
AQI:
Medium
53.9/100
PM2.5 (fine particles):
Good
10.5/100
PM10 (coarse particles):
Good
4.2/100
NO2 (nitrogen dioxide):
Good
12.0/100
O3 (ozone):
Medium
53.9/100
SO2 (sulfur dioxide):
Good
1.0/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
10.5/100
PM1 (ultrafine particles):
Good
11.7/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 15:00
AQI:
Medium
47.9/100
PM2.5 (fine particles):
Good
10.7/100
PM10 (coarse particles):
Good
5.6/100
NO2 (nitrogen dioxide):
Good
13.8/100
O3 (ozone):
Medium
47.9/100
SO2 (sulfur dioxide):
Good
1.0/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
14.7/100
PM1 (ultrafine particles):
Good
12.0/100
Pollen forecast in Ascona
View pollen forecastAir quality forecasts for neighbourhoods and landmarks in Ascona
Frequently Asked Questions
Is air quality bad in Ascona right now?
On 16 July 2026, overall air quality in Ascona is medium. AQI is the main air quality indicator at 53.9/100. Pollution peaks around 5:00 PM (O3: 53.9/100).
Will air quality be worse tomorrow in Ascona?
On 17 July 2026, air quality conditions in Ascona will be similar to today, with AQI forecast at medium at 47.9/100. Pollution peaks around 3:00 PM (O3: 47.9/100).
When is air pollution at its worst in Ascona?
Winter stillness is the main driver behind poor air quality at Ascona, letting vehicle traffic and tourism settle into the valley until conditions shift and clear it. Things generally improve from spring onward, as this sheltered valley's breezes return more consistently, save for an occasional hot-weather ozone peak; autumn stays mostly mild.
Are air quality levels in Ascona 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