Worst air pollution Grenoble, today and tomorrow
Today (9 August): Air quality in Grenoble is fair. AQI, NO2, and O3 are fair; PM2.5, PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 7:00 PM (O3: 37.2/100).
Tomorrow (10 August 2026): Air quality in Grenoble is fair. All pollutants stay as today. Pollution peaks around 3:00 PM (O3: 38.3/100). 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.
Grenoble's air quality faces France's most severe urban topographic challenge, with the city's exceptional Alpine basin position enclosed by the Chartreuse, Belledonne, and Vercors massifs creating one of Europe's deepest and most complete urban pollution traps. Vehicle traffic on the A48 and winter residential heating generate elevated PM2.5 under the frequent thermal inversions that can persist for days, and despite the dramatic Alpine setting, Grenoble consistently records France's highest urban PM2.5 concentrations during winter inversion episodes.
Today - 9 August | Pollution peaks at 19:00
AQI:
Fair
37.2/100
PM2.5 (fine particles):
Good
5.8/100
PM10 (coarse particles):
Good
2.3/100
NO2 (nitrogen dioxide):
Fair
25.4/100
O3 (ozone):
Fair
37.2/100
SO2 (sulfur dioxide):
Good
1.8/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
14.0/100
PM1 (ultrafine particles):
Good
8.2/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 15:00
AQI:
Fair
38.3/100
PM2.5 (fine particles):
Good
7.4/100
PM10 (coarse particles):
Good
2.8/100
NO2 (nitrogen dioxide):
Fair
24.6/100
O3 (ozone):
Fair
38.3/100
SO2 (sulfur dioxide):
Good
1.8/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
10.9/100
PM1 (ultrafine particles):
Good
8.9/100
Pollen forecast in Grenoble
View pollen forecastFrequently Asked Questions
Is air quality bad in Grenoble right now?
On 9 August 2026, overall air quality in Grenoble is fair. AQI is the main air quality indicator at 37.2/100. Pollution peaks around 7:00 PM (O3: 37.2/100).
Will air quality be worse tomorrow in Grenoble?
On 10 August 2026, air quality conditions in Grenoble will be similar to today, with AQI forecast at fair at 38.3/100. Pollution peaks around 3:00 PM (O3: 38.3/100).
When is air pollution at its worst in Grenoble?
In Grenoble, allergy sufferers and those sensitive to pollution both notice more symptoms when valley motorway traffic and light industry coincides with heavy birch and oak pollen; mountain valley winds alternate with calm temperature inversions, keeping bad spells relatively short.
Are air quality levels in Grenoble 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 France?
Check air quality in other popular cities:
Data provided by Airmine — Last update: 9 August 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.
Get the full experience in the Airmine app.