Worst air pollution Saint-Lary-Soulan, today and tomorrow
Today (18 August): Air quality in Saint-Lary-Soulan is fair. AQI, PM2.5, NO2, O3, and PM1 are fair; PM10, SO2, CO, and HCHO are good. Pollution peaks around 3:00 PM (O3: 31.5/100).
Tomorrow (19 August 2026): Air quality in Saint-Lary-Soulan is fair. PM2.5 decreases to good; PM1 decreases to good; all other pollutants stay as today. Pollution peaks around 5:00 PM (O3: 38.5/100). Airmine updates local air quality forecasts four times daily.
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Saint-Lary-Soulan's air quality is shaped mainly by tourist and motorway traffic, with its position near the Garonne playing a role, though the Tramontane wind provides periodic ventilation, which usually keeps pollution from accumulating for long. 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 - 18 August | Pollution peaks at 15:00
AQI:
Fair
31.5/100
PM2.5 (fine particles):
Fair
20.9/100
PM10 (coarse particles):
Good
7.3/100
NO2 (nitrogen dioxide):
Fair
24.3/100
O3 (ozone):
Fair
31.5/100
SO2 (sulfur dioxide):
Good
1.2/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
4.8/100
PM1 (ultrafine particles):
Fair
22.6/100
Levels show the poorest local air quality during the day
Tomorrow - 19 August | Pollution peaks at 17:00
AQI:
Fair
38.5/100
PM2.5 (fine particles):
Good
11.9/100
PM10 (coarse particles):
Good
5.3/100
NO2 (nitrogen dioxide):
Fair
31.6/100
O3 (ozone):
Fair
38.5/100
SO2 (sulfur dioxide):
Good
1.9/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
6.0/100
PM1 (ultrafine particles):
Good
13.9/100
Pollen forecast in Saint-Lary-Soulan
View pollen forecastFrequently Asked Questions
Is air quality bad in Saint-Lary-Soulan right now?
On 18 August 2026, overall air quality in Saint-Lary-Soulan is fair. AQI is the main air quality indicator at 31.5/100. Pollution peaks around 3:00 PM (O3: 31.5/100).
Will air quality be worse tomorrow in Saint-Lary-Soulan?
On 19 August 2026, air quality conditions in Saint-Lary-Soulan will be similar to today, with AQI forecast at fair at 38.5/100. Pollution peaks around 5:00 PM (O3: 38.5/100).
When is air pollution at its worst in Saint-Lary-Soulan?
In Saint-Lary-Soulan, the combination of tourist and motorway traffic and heavy plane and oak pollen in spring is what most affects sensitive groups; the Tramontane wind provides periodic ventilation, so poor conditions rarely last more than a couple of days. Nearby Languedoc vineyards and Pyrenean farmland add a further seasonal factor.
Are air quality levels in Saint-Lary-Soulan 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: 18 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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