Air Quality Lab — Basel, Switzerland
Air Quality Profile
Basel reports an annual PM2.5 of 9.1 µg/m³. That's close to the WHO 2021 annual guideline (5 µg/m³) and well inside historically healthy ranges.
Basel
Switzerland
SwitzerlandAnnual Average
GoodWHO annual classification
9.1µg/m³
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
PM2.5
1212 µg/m³ — Fair
8.98.9 µg/m³ — Good
1111 µg/m³ — Fair
1111 µg/m³ — Fair
8.38.3 µg/m³ — Good
7.87.8 µg/m³ — Good
7.07.0 µg/m³ — Good
7.47.4 µg/m³ — Good
8.68.6 µg/m³ — Good
7.77.7 µg/m³ — Good
9.09.0 µg/m³ — Good
1111 µg/m³ — Fair
Jan
Feb
Mar
Apr
May
Jun
1212 µg/m³ — Fair
8.98.9 µg/m³ — Good
1111 µg/m³ — Fair
1111 µg/m³ — Fair
8.38.3 µg/m³ — Good
7.87.8 µg/m³ — Good
Jul
Aug
Sep
Oct
Nov
Dec
7.07.0 µg/m³ — Good
7.47.4 µg/m³ — Good
8.68.6 µg/m³ — Good
7.77.7 µg/m³ — Good
9.09.0 µg/m³ — Good
1111 µg/m³ — Fair
Best months: Jul–Aug, OctWorst months: Jan, Mar–Apr
Good5–10 µg/m³Fair10–15 µg/m³
Based on WUSTL PM2.5 dataset (2020–2024) · WHO 2021 thresholds
Confidence: ●●●
How air quality compares
Compared across Switzerland
Basel: 9.1 µg/m³. Typical range in Switzerland: 7.6–8.9 µg/m³. Low anchor: La Chaux-de-Fonds, 5.9 µg/m³. High anchor: Lausanne, 9.6 µg/m³.
45 cities tracked