Air Quality in Aarau, Switzerland
Partly Cloudy
14.6°C · 58.2% humidity
14.6°
Feels 14.6°
5
Good
Air quality is satisfactory. Enjoy outdoor activities.
2 stations
Nearby Monitoring Stations
Aarau's air quality — share it
AQI Forecast
Calibrated
22
10pm
22
22
5
1am
10
13
16
4am
18
19
20
7am
20
21
21
10am
21
2
2
1pm
2
0
0
4pm
0
0
0
7pm
0
0
Station readings
4
CAMS model
adj -32
54
54
54
54
54
54
54
54
54
54
54
54
54
54
34
34
34
25
25
25
25
25
25
27
Air Quality Index Trend
42h · 1 stnAarau'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.
58.2%
Humidity
9.9 km/h
Wind ENE
1015.2 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5
1.16 µg/m³
PM10▲
20.55 µg/m³
050100150200300500
What is the weather forecast for Aarau?
Temperature & Precipitation
PM2.5 Trend
42h · 1 stationPM2.51.16 µg/m³
✓ WHO
Good
PM1020.55 µg/m³
Good
UV INDEX0.7
Low
Station readings (2 stations within 25 km)
1.16
Median
4.8
Average
1.0
Low
8.6
High
PM2.5 µg/m³ · Model: 9.75 · Bias: +8.6
What is the 7-day forecast for Aarau?
07-21
29.2° 13.3°
0.06 mm
07-22
25.2° 14.6°
0.38 mm
07-23
22.4° 16.0°
0.56 mm
07-24
24.1° 12.0°
07-25
31.3° 11.7°
2.31 mm
07-26
33.4° 14.1°
1.75 mm
07-27
31.7° 14.3°
5.31 mm
Both models agree
Avg diff: 2.6°C
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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 2026-07-21T23:11 UTC.