Worst air pollution Geneva, today and tomorrow
Today (20 September): Air quality in Geneva is fair. AQI, PM2.5, NO2, and O3 are fair; PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 8:00 AM (PM2.5: 35.9/100).
Tomorrow (21 September 2026): Air quality in Geneva is fair. NO2 decreases to good; all other pollutants stay as today. Pollution peaks around 12:00 AM (PM2.5: 26.2/100). Airmine updates local air quality forecasts four times daily.
Get the full experience in the Airmine app.
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
Follow your pollen exposure and performance with the free Airmine–Strava integration. See your pollen and air quality exposure for every Strava activity.
Geneva's air quality is generally good, benefiting from the Lake Geneva corridor and the Jura and Alpine mountain system providing consistent ventilation from the southwest and northeast. Vehicle traffic on the A1 and surrounding cantonal road network and the concentrated international organisation and aviation activity from Geneva Airport contribute the primary local emissions, while wood burning adds seasonal PM2.5 in winter and the Bise northeasterly wind from the Swiss Plateau periodically provides exceptional clean-air episodes.
Today - 20 September | Pollution peaks at 08:00
AQI:
Fair
35.9/100
PM2.5 (fine particles):
Fair
35.9/100
PM10 (coarse particles):
Good
14.4/100
NO2 (nitrogen dioxide):
Fair
31.6/100
O3 (ozone):
Fair
26.4/100
SO2 (sulfur dioxide):
Good
0.8/100
CO (carbon monoxide):
Good
0.8/100
HCHO (formaldehyde):
Good
5.1/100
PM1 (ultrafine particles):
Good
17.7/100
Levels show the poorest local air quality during the day
Tomorrow - 21 September | Pollution peaks at 00:00
AQI:
Fair
26.2/100
PM2.5 (fine particles):
Fair
26.2/100
PM10 (coarse particles):
Good
11.2/100
NO2 (nitrogen dioxide):
Good
18.0/100
O3 (ozone):
Fair
24.2/100
SO2 (sulfur dioxide):
Good
0.6/100
CO (carbon monoxide):
Good
0.6/100
HCHO (formaldehyde):
Good
4.3/100
PM1 (ultrafine particles):
Good
9.3/100
Pollen forecast in Geneva
View pollen forecastAir quality forecasts for neighbourhoods and landmarks in Geneva
Sports venues in Geneva
Frequently Asked Questions
Is air quality bad in Geneva right now?
On 20 September 2026, overall air quality in Geneva is fair. AQI is the main air quality indicator at 35.9/100. Pollution peaks around 8:00 AM (PM2.5: 35.9/100).
Will air quality be worse tomorrow in Geneva?
On 21 September 2026, air quality conditions in Geneva will be similar to today, with AQI forecast at fair at 26.2/100. Pollution peaks around 12:00 AM (PM2.5: 26.2/100).
When is air pollution at its worst in Geneva?
On a rare still winter morning, vehicle traffic and international commuter activity at Geneva settle along the lake basin and linger, pushing readings to their worst point of the year. From spring, conditions steadily pick up around the lake, and summer stays mostly clear aside from a rare ozone spike, with autumn usually just as settled.
Are air quality levels in Geneva 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.
Why doesn’t the forecast always reflect wildfire impacts?
Airmine’s forecast uses CAMS (Copernicus Atmosphere Monitoring Service) as its background atmospheric model. While CAMS includes wildfire emissions, these are derived from satellite observations and are not available in real time. During rapidly evolving wildfire events, there may therefore be a delay before increased emissions are incorporated into the model. As a result, the forecast may temporarily underestimate PM₂.₅ and other pollutants associated with wildfire smoke.
During rapidly evolving wildfire events, CAMS may lag by approximately 1–2 days before increased wildfire emissions are fully represented, which can lead to temporary underestimation of PM₂.₅ concentrations in Airmine’s forecast.
Want to see air quality forecasts for other cities in Switzerland?
Check air quality in other popular cities:
Data provided by Airmine — Last update: 20 September 2026 at 20:27 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.
Disclaimer: Forecasts are provided for informational purposes only and should not be relied upon as medical advice. Actual pollen and air quality conditions may vary from the forecast. If you have allergies, asthma, or another medical condition, consult a healthcare professional. Please see our Terms of Service for important information about limitations of liability.
Some text on this page may be generated or summarised using artificial intelligence (AI). Wherever possible, AI-generated content is enriched with Airmine's proprietary data to improve its accuracy and relevance. However, AI-generated content may still contain errors, omissions, or inaccuracies.
Get the full experience in the Airmine app.