Worst air pollution Port Marianne - Montpellier, today and tomorrow
Today (9 August): Air quality in Port Marianne is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 1:00 PM (O3: 35.4/100).
Tomorrow (10 August 2026): Air quality in Port Marianne is fair. All pollutants stay as today. Pollution peaks around 2:00 PM (O3: 35.6/100). Airmine updates local air quality forecasts four times daily.
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The Port Marianne area of Montpellier experiences air quality driven by tourist and motorway traffic, while the Tramontane wind provides periodic ventilation, keeping conditions reasonable across the year. Summer is the more challenging season, as calm, hot anticyclonic conditions allow ozone to build up, while winter is generally cleaner thanks to more frequent Tramontane winds.
Today - 9 August | Pollution peaks at 13:00
AQI:
Fair
35.4/100
PM2.5 (fine particles):
Good
8.1/100
PM10 (coarse particles):
Good
3.1/100
NO2 (nitrogen dioxide):
Good
13.7/100
O3 (ozone):
Fair
35.4/100
SO2 (sulfur dioxide):
Good
2.8/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
7.6/100
PM1 (ultrafine particles):
Good
5.2/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 14:00
AQI:
Fair
35.6/100
PM2.5 (fine particles):
Good
7.5/100
PM10 (coarse particles):
Good
2.7/100
NO2 (nitrogen dioxide):
Good
13.1/100
O3 (ozone):
Fair
35.6/100
SO2 (sulfur dioxide):
Good
3.1/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
5.4/100
PM1 (ultrafine particles):
Good
5.8/100
Other Landmarks in Montpellier
Sports venues in Montpellier
Frequently Asked Questions
Is air quality bad in Port Marianne right now?
On 9 August 2026, overall air quality in Port Marianne is fair. AQI is the main air quality indicator at 35.4/100. Pollution peaks around 1:00 PM (O3: 35.4/100).
Will air quality be worse tomorrow in Port Marianne?
On 10 August 2026, air quality conditions in Port Marianne will be similar to today, with AQI forecast at fair at 35.6/100. Pollution peaks around 2:00 PM (O3: 35.6/100).
When is air pollution at its worst in Port Marianne?
For those living in Port Marianne, part of Montpellier, spring days combining tourist and motorway traffic with heavy plane and oak pollen are the hardest; the Tramontane wind provides periodic ventilation, so it rarely lasts long.
Are air quality levels in Port Marianne 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.
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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.
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