Worst air pollution Kleinbasel - Basel, today and tomorrow
Today (16 July): Air quality in Kleinbasel is fair. PM2.5 and PM1 are fair; AQI, NO2, and O3 are medium; PM10, SO2, CO, and HCHO are good. Pollution peaks around 4:00 PM (O3: 48.7/100).
Tomorrow (17 July 2026): Air quality in Kleinbasel is fair. PM2.5 decreases to good; O3 increases to fair; PM1 decreases to good; all other pollutants stay as today. Pollution peaks around 3:00 AM (NO2: 48.5/100). Airmine updates local air quality forecasts four times daily.
For long term forecasts and maps, see the Airmine app
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
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Kleinbasel's air quality reflects its Rhine riverside position on Basel's right bank, with vehicle traffic and the district's dense multicultural character contributing local sources within the Rhine valley.
Today - 16 July | Pollution peaks at 16:00
AQI:
Medium
48.7/100
PM2.5 (fine particles):
Fair
22.5/100
PM10 (coarse particles):
Good
7.4/100
NO2 (nitrogen dioxide):
Medium
47.8/100
O3 (ozone):
Medium
48.7/100
SO2 (sulfur dioxide):
Good
1.9/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
5.9/100
PM1 (ultrafine particles):
Fair
26.4/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 03:00
AQI:
Medium
48.5/100
PM2.5 (fine particles):
Good
15.5/100
PM10 (coarse particles):
Good
6.0/100
NO2 (nitrogen dioxide):
Medium
48.5/100
O3 (ozone):
Fair
34.4/100
SO2 (sulfur dioxide):
Good
1.3/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
3.9/100
PM1 (ultrafine particles):
Good
18.7/100
Other Landmarks in Basel
Sports venues in Basel
Frequently Asked Questions
Is air quality bad in Kleinbasel right now?
On 16 July 2026, overall air quality in Kleinbasel is fair. PM1 is the main pollutant at 26.4/100. Pollution peaks around 4:00 PM (O3: 48.7/100).
Will air quality be worse tomorrow in Kleinbasel?
On 17 July 2026, air quality conditions in Kleinbasel will be similar to today, with O3 forecast at fair at 34.4/100. Pollution peaks around 3:00 AM (NO2: 48.5/100).
When is air pollution at its worst in Kleinbasel?
Winter stillness drives most of the poor air quality at Kleinbasel, letting vehicle traffic and cross-border industry build up over the plain until the wind eventually returns. Things generally improve from spring onward, as cross-border winds move more freely, save for an occasional hot-weather ozone peak; autumn stays mostly calm and clear.
Are air quality levels in Kleinbasel 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.
Want to see air quality forecasts for other cities in Switzerland?
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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