Worst air pollution Bourg-en-Bresse, today and tomorrow
Today (9 August): Air quality in Bourg-en-Bresse is fair. O3 is fair; AQI and NO2 are medium; PM2.5, PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 6:00 AM (NO2: 48.1/100).
Tomorrow (10 August 2026): Air quality in Bourg-en-Bresse is fair. AQI worsens to fair; NO2 increases to fair; all other pollutants stay as today. Pollution peaks around 10:00 PM (NO2: 38.6/100). Airmine updates local air quality forecasts four times daily.
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In Bourg-en-Bresse, valley motorway traffic and light industry is the primary local source affecting air quality, near the Allier, though mountain valley winds alternate with calm temperature inversions, which usually keeps pollution from accumulating for long. Winter is typically the worst season, as cold air settles in the valleys and traps traffic and heating emissions for days at a time; summer sees better dispersion but occasional ozone build-up in the lower valleys.
Today - 9 August | Pollution peaks at 06:00
AQI:
Medium
48.1/100
PM2.5 (fine particles):
Good
9.9/100
PM10 (coarse particles):
Good
3.2/100
NO2 (nitrogen dioxide):
Medium
48.1/100
O3 (ozone):
Fair
37.4/100
SO2 (sulfur dioxide):
Good
4.0/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
19.5/100
PM1 (ultrafine particles):
Good
13.7/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 22:00
AQI:
Fair
38.6/100
PM2.5 (fine particles):
Good
16.0/100
PM10 (coarse particles):
Good
9.1/100
NO2 (nitrogen dioxide):
Fair
38.6/100
O3 (ozone):
Fair
37.0/100
SO2 (sulfur dioxide):
Good
4.1/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
12.9/100
PM1 (ultrafine particles):
Good
13.0/100
Pollen forecast in Bourg-en-Bresse
View pollen forecastFrequently Asked Questions
Is air quality bad in Bourg-en-Bresse right now?
On 9 August 2026, overall air quality in Bourg-en-Bresse is fair. O3 is the main pollutant at 37.4/100. Pollution peaks around 6:00 AM (NO2: 48.1/100).
Will air quality be worse tomorrow in Bourg-en-Bresse?
On 10 August 2026, air quality conditions in Bourg-en-Bresse will be similar to today, with AQI forecast at fair at 38.6/100. Pollution peaks around 10:00 PM (NO2: 38.6/100).
When is air pollution at its worst in Bourg-en-Bresse?
In Bourg-en-Bresse, the combination of valley motorway traffic and light industry and heavy birch and oak pollen in spring is what most affects sensitive groups; mountain valley winds alternate with calm temperature inversions, so poor conditions rarely last more than a couple of days. Nearby alpine valley pasture and orchards add a further seasonal factor.
Are air quality levels in Bourg-en-Bresse 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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