What is the air quality in Sierre today?

The current Air Quality Index (AQI) in Sierre is 24 (Good). PM2.5 concentration is 5.8 µg/m³.

What is the temperature in Sierre right now?

The current temperature in Sierre is 12.2°C (feels like 12.2°C). Humidity is 40.6% and wind speed is 9.7 km/h.

Is it safe to go outside in Sierre?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 0.0 (Low).

Air Quality in Sierre, Switzerland

Clear

12.2°C · 40.6% humidity

12.2°

Feels 12.2°

Good

Air quality is satisfactory. Enjoy outdoor activities.

1 station

Nearby Monitoring Stations

AQI Forecast

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Air Quality Index Trend

36h · 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.

40.6%

Humidity

9.7 km/h

Wind NW

1017.8 hPa

Pressure

0.0

UV Low

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

5.8 µg/m³

PM10

13.7 µg/m³

050100150200300500

What is the weather forecast for Sierre?

Temperature & Precipitation

PM2.5 Trend

36h · 2 stations

PM2.55.8 µg/m³ ✓ WHO

Good

PM1013.7 µg/m³

Good

UV INDEX0.0

Low

Station readings (1 station within 25 km)

5.8

Median

5.8

Average

5.8

Low

5.8

High

PM2.5 µg/m³ · Model: 5.8 · Bias: +0.0

What is the 7-day forecast for Sierre?

10-21

12.2° -5.4°

1.31 mm

10-22

16.2° 2.7°

4.69 mm

10-23

4.5° -2.2°

3.56 mm

10-24

3.9° -0.0°

10-25

12.2° -1.8°

10-26

2.2° -1.9°

2.87 mm

10-27

12.4° -3.7°

Both models agree Avg diff: 5.6°C

Where are air quality stations near Sierre?

Sion Aeroport A9, Switzerland

16.9 km PM2.5: 4.1 µg/m³

What cities are near Sierre?

24 Sitten 24 Martigny-Ville 23 Monthey 12 Montreux 36 Thun 32 Bulle 56 Steffisburg 12 Vevey 27 Domodossola 12 Aosta

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ModerateAQI > 50 Unhealthy for Sensitive GroupsAQI > 100 UnhealthyAQI > 150 Very UnhealthyAQI > 200

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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 2026-10-21T12:28 UTC.