Worst air pollution Töss - Winterthur, today and tomorrow
Today (16 July): Air quality in Töss is fair. PM1 is fair; AQI and O3 are medium; PM2.5, PM10, NO2, SO2, CO, and HCHO are good. Pollution peaks around 2:00 PM (O3: 47.4/100).
Tomorrow (17 July 2026): Air quality in Töss is fair. AQI worsens to fair; O3 increases to fair; PM1 decreases to good; all other pollutants stay as today. Pollution peaks around 3:00 PM (O3: 36.1/100). 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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Töss' air quality reflects its position along the Töss river in southern Winterthur, with legacy industrial character and vehicle traffic contributing modest local emissions to this river-valley district.
Today - 16 July | Pollution peaks at 14:00
AQI:
Medium
47.4/100
PM2.5 (fine particles):
Good
16.7/100
PM10 (coarse particles):
Good
5.2/100
NO2 (nitrogen dioxide):
Good
0/100
O3 (ozone):
Medium
47.4/100
SO2 (sulfur dioxide):
Good
0/100
CO (carbon monoxide):
Good
0/100
HCHO (formaldehyde):
Good
5.2/100
PM1 (ultrafine particles):
Fair
21.1/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 15:00
AQI:
Fair
36.1/100
PM2.5 (fine particles):
Good
10.0/100
PM10 (coarse particles):
Good
4.5/100
NO2 (nitrogen dioxide):
Good
0/100
O3 (ozone):
Fair
36.1/100
SO2 (sulfur dioxide):
Good
0/100
CO (carbon monoxide):
Good
0/100
HCHO (formaldehyde):
Good
5.2/100
PM1 (ultrafine particles):
Good
12.8/100
Other Landmarks in Winterthur
Frequently Asked Questions
Is air quality bad in Töss right now?
On 16 July 2026, overall air quality in Töss is fair. PM1 is the main pollutant at 21.1/100. Pollution peaks around 2:00 PM (O3: 47.4/100).
Will air quality be worse tomorrow in Töss?
On 17 July 2026, air quality conditions in Töss will be similar to today, with AQI forecast at fair at 36.1/100. Pollution peaks around 3:00 PM (O3: 36.1/100).
When is air pollution at its worst in Töss?
Winter stillness is the main driver of poor air quality at Töss, letting vehicle traffic and dense urban activity build up in the lake basin until the wind eventually returns. Things generally improve from spring onward, with summer's stronger winds keeping the air clear except for the occasional hot-weather ozone peak; autumn is typically calm and mild.
Are air quality levels in Töss 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