What is the air quality in Sierre today?

The current Air Quality Index (AQI) in Sierre is 20 (Good). PM2.5 concentration is 4.8 µg/m³.

What is the temperature in Sierre right now?

The current temperature in Sierre is 7.0°C (feels like 2.5°C). Humidity is 98.1% and wind speed is 31.2 km/h.

Is it safe to go outside in Sierre?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 0.7 (Low).

Air Quality in Sierre, Switzerland

Rain

7.0°C · 98.1% humidity

7.0°

Feels 2.5°

Good

Air quality is satisfactory. Enjoy outdoor activities.

1 station

Nearby Monitoring Stations

AQI Forecast

27 11pm

20 2am

21 5am

23 8am

24 11am

24 2pm

24 5pm

24 8pm

Air Quality Index Trend

38h · 2 stn

View full history →

Sierre'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.

98.1%

Humidity

31.2 km/h

Wind WNW

1018.4 hPa

Pressure

0.7

UV Low

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

4.8 µg/m³

PM10

13.7 µg/m³

050100150200300500

What is the weather forecast for Sierre?

Temperature & Precipitation

PM2.5 Trend

38h · 2 stations

PM2.54.8 µg/m³ ✓ WHO

Good

PM1013.7 µg/m³

Good

UV INDEX0.7

Low

Station readings (1 station within 25 km)

4.8

Median

4.8

Average

4.8

Low

4.8

High

PM2.5 µg/m³ · Model: 6.15 · Bias: +1.4

What is the 7-day forecast for Sierre?

06-09

17.1° 5.9°

7.75 mm

06-10

17.8° 6.6°

6.75 mm

06-11

20.0° 8.6°

15.25 mm

06-12

19.9° 7.1°

0.13 mm

06-13

22.0° 2.9°

3.81 mm

06-14

22.0° 5.9°

1.56 mm

06-15

23.3° 6.4°

0.94 mm

Both models agree Avg diff: 3.0°C

Where are air quality stations near Sierre?

Sion Aeroport A9, Switzerland

16.9 km PM2.5: 2.2 µg/m³

Sion Aeroport A9, Switzerland

16.9 km PM2.5: 14.0 µg/m³

What cities are near Sierre?

20 Sitten 20 Martigny-Ville 28 Monthey 30 Montreux 25 Thun 27 Bulle 24 Steffisburg 30 Vevey 38 Domodossola 34 Aosta

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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 2026-06-09T00:18 UTC.