Worst air pollution Kreis 4 (Aussersihl) - Zürich, today and tomorrow
Today (16 July): Air quality in Kreis 4 (Aussersihl) is fair. NO2 is fair; AQI and O3 are medium; PM2.5, PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 2:00 PM (O3: 43.5/100).
Tomorrow (17 July 2026): Air quality in Kreis 4 (Aussersihl) is fair. AQI worsens to fair; O3 increases to fair; all other pollutants stay as today. Pollution peaks around 3:00 PM (O3: 33.7/100). 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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Kreis 4's air quality reflects its dense inner-city character near Zürich's main station, with rail and vehicle traffic contributing the primary local emissions in this compact urban district.
Today - 16 July | Pollution peaks at 14:00
AQI:
Medium
43.5/100
PM2.5 (fine particles):
Good
13.3/100
PM10 (coarse particles):
Good
5.2/100
NO2 (nitrogen dioxide):
Fair
30.9/100
O3 (ozone):
Medium
43.5/100
SO2 (sulfur dioxide):
Good
0.9/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
5.3/100
PM1 (ultrafine particles):
Good
14.6/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 15:00
AQI:
Fair
33.7/100
PM2.5 (fine particles):
Good
15.3/100
PM10 (coarse particles):
Good
5.6/100
NO2 (nitrogen dioxide):
Fair
30.1/100
O3 (ozone):
Fair
33.7/100
SO2 (sulfur dioxide):
Good
0.9/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
5.3/100
PM1 (ultrafine particles):
Good
18.5/100
Other Landmarks in Zürich
Sports venues in Zürich
Frequently Asked Questions
Is air quality bad in Kreis 4 (Aussersihl) right now?
On 16 July 2026, overall air quality in Kreis 4 (Aussersihl) is fair. NO2 is the main pollutant at 30.9/100. Pollution peaks around 2:00 PM (O3: 43.5/100).
Will air quality be worse tomorrow in Kreis 4 (Aussersihl)?
On 17 July 2026, air quality conditions in Kreis 4 (Aussersihl) will be similar to today, with AQI forecast at fair at 33.7/100. Pollution peaks around 3:00 PM (O3: 33.7/100).
When is air pollution at its worst in Kreis 4 (Aussersihl)?
At Kreis 4 (Aussersihl), winter brings the poorest readings, as vehicle traffic and dense urban activity build up around the lake basin whenever the usual breeze fails to stir the 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 Kreis 4 (Aussersihl) 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.
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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