Worst air pollution Biel/Bienne, today and tomorrow
Today (16 July): Air quality in Biel/Bienne is medium. AQI and O3 are medium; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 2:00 PM (O3: 43.3/100).
Tomorrow (17 July 2026): Air quality in Biel/Bienne is fair. AQI worsens to fair; O3 increases to fair; all other pollutants stay as today. Pollution peaks around 3:00 PM (O3: 30.9/100). Airmine updates local air quality forecasts four times daily.
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Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
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Biel/Bienne's air quality reflects the Swiss Midland position on Lake Biel, with vehicle traffic on the A5 and surrounding watchmaking and precision manufacturing industry contributing local sources in this bilingual Swiss industrial city. The Lake Biel breeze provides distinctive local ventilation cycles, while the surrounding Jura hills create topographic variation and the Alpine Föhn wind periodically delivers exceptional clean mountain air, generally maintaining Biel among Switzerland's more moderate industrial urban environments throughout the year.
Today - 16 July | Pollution peaks at 14:00
AQI:
Medium
43.3/100
PM2.5 (fine particles):
Good
11.5/100
PM10 (coarse particles):
Good
4.6/100
NO2 (nitrogen dioxide):
Good
18.8/100
O3 (ozone):
Medium
43.3/100
SO2 (sulfur dioxide):
Good
0.5/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
4.8/100
PM1 (ultrafine particles):
Good
13.6/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 15:00
AQI:
Fair
30.9/100
PM2.5 (fine particles):
Good
7.2/100
PM10 (coarse particles):
Good
3.7/100
NO2 (nitrogen dioxide):
Good
17.8/100
O3 (ozone):
Fair
30.9/100
SO2 (sulfur dioxide):
Good
0.5/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
3.2/100
PM1 (ultrafine particles):
Good
7.7/100
Pollen forecast in Biel/Bienne
View pollen forecastAir quality forecasts for neighbourhoods and landmarks in Biel/Bienne
Frequently Asked Questions
Is air quality bad in Biel/Bienne right now?
On 16 July 2026, overall air quality in Biel/Bienne is medium. AQI is the main air quality indicator at 43.3/100. Pollution peaks around 2:00 PM (O3: 43.3/100).
Will air quality be worse tomorrow in Biel/Bienne?
On 17 July 2026, air quality conditions in Biel/Bienne will be worse than today, with AQI forecast at fair at 30.9/100. Pollution peaks around 3:00 PM (O3: 30.9/100).
When is air pollution at its worst in Biel/Bienne?
Winter calm is the main driver behind poor air quality at Biel/Bienne, letting vehicle traffic and administrative and commuter activity settle into the valley until stronger winds eventually clear it. Once spring arrives, dispersion improves steadily along the valley floor, and summer stays largely clear except during rare heatwaves; autumn tends to be comparatively mild.
Are air quality levels in Biel/Bienne 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.
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Data provided by Airmine — Last update: 16 July 2026 at 10:33 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.
For long term forecasts and maps, see the Airmine app