Air Quality in Herisau, Switzerland

Drizzle
24.7°C · 55.6% humidity
24.7°
Feels 24.7°
10
Good
Air quality is satisfactory. Enjoy outdoor activities.
1 station

Nearby Monitoring Stations

AQI Forecast Calibrated
26 4am
26
26
10 7am
14
14
14 10am
0
0
0 1pm
0
0
0 4pm
0
0
0 7pm
0
0
0 10pm
0
14
14 1am
14
14
Station readings
20
30
32
CAMS model adj -40
66
66
66
54
54
54
54
27
27
27
27
25
25
25
25
25
25
27
27
34
54
54
54
54
AD 728×90

Air Quality Index Trend

42h · 1 stn

Herisau's air quality is shaped by traffic emissions and residential heating. Pollution levels tend to peak during winter months when cold air traps emissions close to ground level.

55.6%
Humidity
25.3 km/h
Wind NW
1014.3 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5
10
2.39 µg/m³
PM10▲
19
20.55 µg/m³
050100150200300500

What is the weather forecast for Herisau?

Temperature & Precipitation

PM2.5 Trend

42h · 1 station
PM2.52.39 µg/m³ ✓ WHO
Good
PM1020.55 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
Station readings (1 station within 25 km)
2.39
Median
2.39
Average
2.39
Low
2.39
High
PM2.5 µg/m³ · Model: 10.0 · Bias: +7.6

What is the 7-day forecast for Herisau?

08-03
32.9° 17.7°
0.69 mm
08-04
28.8° 15.5°
0.56 mm
08-05
29.1° 16.2°
0.25 mm
08-06
28.0° 18.5°
0.44 mm
08-07
33.6° 16.7°
4.5 mm
08-08
23.4° 12.6°
11.5 mm
08-09
21.3° 13.9°
1.56 mm
Both models agree Avg diff: 4.2°C

Where are air quality stations near Herisau?

34
St.Gallen Blumenbergplatz, Switzerland
8.5 km PM2.5: 8.2 µg/m³
32
St.Gallen Stuelegg, Switzerland
9.0 km PM2.5: 7.7 µg/m³
32
Oberriet, Adlerstrasse
23.0 km PM2.5: 7.6 µg/m³ PM10: 7.9 µg/m³
38
Grabs Marktplatz, Switzerland
25.7 km PM2.5: 9.1 µg/m³
11
L190 (3m von L53), L191, Bärenkreuzung L53, Austria
29.0 km PM2.5: 2.6 µg/m³

What cities are near Herisau?

13 Gossau 10 Sankt Gallen 47 Wil 21 Lustenau 10 Feldkirch 47 Kreuzlingen 13 Hohenems 47 Konstanz 10 Vaduz 47 Petershausen-West
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Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-08-08T05:35 UTC.