What is the air quality in Saint-Louis today?

The current Air Quality Index (AQI) in Saint-Louis is 22 (Good). PM2.5 concentration is 5.32 µg/m³.

What is the temperature in Saint-Louis right now?

The current temperature in Saint-Louis is 12.3°C (feels like 12.3°C). Humidity is 89.5% and wind speed is 25.1 km/h.

Is it safe to go outside in Saint-Louis?

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

Air Quality in Saint-Louis, France

Rain

12.3°C · 89.5% humidity

12.3°

Feels 12.3°

Good

Air quality is satisfactory. Enjoy outdoor activities.

4 stations

Nearby Monitoring Stations

AQI Forecast Calibrated

15 2am

22 5am

15 8am

13 11am

12 2pm

13 5pm

13 8pm

15 11pm

Station readings

CAMS model adj -12

Air Quality Index Trend

34h · 2 stn

View full history →

Saint-Louis'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.

89.5%

Humidity

25.1 km/h

Wind SSW

1022.8 hPa

Pressure

0.7

UV Low

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

5.32 µg/m³

PM10

13.7 µg/m³

050100150200300500

What is the weather forecast for Saint-Louis?

Temperature & Precipitation

PM2.5 Trend

34h · 2 stations

PM2.55.32 µg/m³ ✓ WHO

Good

PM1013.7 µg/m³

Good

UV INDEX0.7

Low

Station readings (4 stations within 25 km)

5.32

Median

4.27

Average

2.27

Low

5.5

High

PM2.5 µg/m³ · Model: 5.9 · Bias: +0.6

What is the 7-day forecast for Saint-Louis?

06-09

27.3° 11.0°

10.37 mm

06-10

23.5° 12.7°

0.06 mm

06-11

24.3° 14.0°

5.56 mm

06-12

24.3° 11.9°

1.44 mm

06-13

26.3° 9.7°

8.44 mm

06-14

25.7° 11.9°

0.13 mm

06-15

27.3° 13.2°

Both models agree Avg diff: 3.0°C

Where are air quality stations near Saint-Louis?

C.C. 3 Frontières, Alsace, France

0.7 km PM2.5: 10.8 µg/m³

Weil am Rhein, Germany

5.6 km PM2.5: 7.2 µg/m³

switzerland-zwingen-reckholderstrasse

17.2 km 22.0°C 62.0% RH PM2.5: 4.1 µg/m³ PM10: 4.3 µg/m³

Hauptstraße Schwörstadt

23.4 km 20.0°C 70.0% RH PM2.5: 0.7 µg/m³ PM10: 1.8 µg/m³

–

Schwarzwald-Süd, Germany

28.7 km

Schwarzwald-Süd, Germany

28.7 km PM2.5: 5.3 µg/m³

What cities are near Saint-Louis?

23 Basel 23 Weil am Rhein 23 Allschwil 23 Riehen 22 Lörrach 22 Muttenz 21 Reinach 14 Rheinfelden 15 Schopfheim 25 Müllheim

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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 2026-06-09T03:04 UTC.