Air Quality Lab — Herisau, Switzerland
Air Quality Profile·
Herisau reports an annual PM2.5 of 7.2 µg/m³. That's close to the WHO 2021 annual guideline (5 µg/m³) and well inside historically healthy ranges.
Herisau
Switzerland
SwitzerlandAnnual Average
GoodWHO annual classification
7.2µg/m³
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
PM2.5
1010 µg/m³ — Fair
6.86.8 µg/m³ — Good
8.38.3 µg/m³ — Good
8.48.4 µg/m³ — Good
7.17.1 µg/m³ — Good
6.56.5 µg/m³ — Good
4.74.7 µg/m³ — Excellent
4.24.2 µg/m³ — Excellent
6.56.5 µg/m³ — Good
6.66.6 µg/m³ — Good
8.58.5 µg/m³ — Good
8.58.5 µg/m³ — Good
Jan
Feb
Mar
Apr
May
Jun
1010 µg/m³ — Fair
6.86.8 µg/m³ — Good
8.38.3 µg/m³ — Good
8.48.4 µg/m³ — Good
7.17.1 µg/m³ — Good
6.56.5 µg/m³ — Good
Jul
Aug
Sep
Oct
Nov
Dec
4.74.7 µg/m³ — Excellent
4.24.2 µg/m³ — Excellent
6.56.5 µg/m³ — Good
6.66.6 µg/m³ — Good
8.58.5 µg/m³ — Good
8.58.5 µg/m³ — Good
Best months: Jun–AugWorst months: Jan, Nov–Dec
Excellent0–5 µg/m³Good5–10 µg/m³Fair10–15 µg/m³
Based on WUSTL PM2.5 dataset (2020–2024) · WHO 2021 thresholds
Confidence: ●●●
How air quality compares
Compared across Switzerland
Herisau: 7.2 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