Air Quality Lab — Sierre, Switzerland
Air Quality Profile·
Sierre reports an annual PM2.5 of 9.8 µg/m³. That's close to the WHO 2021 annual guideline (5 µg/m³) and well inside historically healthy ranges.
Sierre
Switzerland
SwitzerlandAnnual Average
GoodWHO annual classification
9.8µg/m³
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
PM2.5
1717 µg/m³ — Moderate
1212 µg/m³ — Fair
1212 µg/m³ — Fair
9.89.8 µg/m³ — Good
6.66.6 µg/m³ — Good
6.86.8 µg/m³ — Good
6.26.2 µg/m³ — Good
7.17.1 µg/m³ — Good
6.76.7 µg/m³ — Good
9.49.4 µg/m³ — Good
1010 µg/m³ — Fair
1414 µg/m³ — Fair
Jan
Feb
Mar
Apr
May
Jun
1717 µg/m³ — Moderate
1212 µg/m³ — Fair
1212 µg/m³ — Fair
9.89.8 µg/m³ — Good
6.66.6 µg/m³ — Good
6.86.8 µg/m³ — Good
Jul
Aug
Sep
Oct
Nov
Dec
6.26.2 µg/m³ — Good
7.17.1 µg/m³ — Good
6.76.7 µg/m³ — Good
9.49.4 µg/m³ — Good
1010 µg/m³ — Fair
1414 µg/m³ — Fair
Best months: May, Jul, SepWorst months: Jan, Mar, Dec
Good5–10 µg/m³Fair10–15 µg/m³Moderate15–25 µg/m³
Based on WUSTL PM2.5 dataset (2020–2024) · WHO 2021 thresholds
Confidence: ●●●
How air quality compares
Compared across Switzerland
Sierre: 9.8 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