Air Quality Lab — Chur, Switzerland
Air Quality Profile·
Chur reports an annual PM2.5 of 9.4 µg/m³. That's close to the WHO 2021 annual guideline (5 µg/m³) and well inside historically healthy ranges.
Chur
Switzerland
SwitzerlandAnnual Average
GoodWHO annual classification
9.4µg/m³
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
PM2.5
1515 µg/m³ — Fair
1313 µg/m³ — Fair
1212 µg/m³ — Fair
9.79.7 µg/m³ — Good
7.37.3 µg/m³ — Good
7.57.5 µg/m³ — Good
6.36.3 µg/m³ — Good
5.75.7 µg/m³ — Good
5.45.4 µg/m³ — Good
7.87.8 µg/m³ — Good
9.49.4 µg/m³ — Good
1414 µg/m³ — Fair
Jan
Feb
Mar
Apr
May
Jun
1515 µg/m³ — Fair
1313 µg/m³ — Fair
1212 µg/m³ — Fair
9.79.7 µg/m³ — Good
7.37.3 µg/m³ — Good
7.57.5 µg/m³ — Good
Jul
Aug
Sep
Oct
Nov
Dec
6.36.3 µg/m³ — Good
5.75.7 µg/m³ — Good
5.45.4 µg/m³ — Good
7.87.8 µg/m³ — Good
9.49.4 µg/m³ — Good
1414 µg/m³ — Fair
Best months: Jul–SepWorst months: Jan–Feb, Dec
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
Chur: 9.4 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