Air Quality in Saint-Louis, France

Partly Cloudy
23.8°C · 55.3% humidity
23.8°
Feels 23.8°
25
Good
Air quality is satisfactory. Enjoy outdoor activities.
4 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
22 11am
15
17
25 2pm
22
22
22 5pm
21
21
21 8pm
22
22
24 11pm
24
31
31 2am
31
31
31 5am
31
31
31 8am
24
22
Station readings
50
15
17
20
CAMS model adj -3
25
25
24
24
25
25
25
24
24
24
25
25
27
27
34
34
34
34
34
34
34
34
27
25
AD 728×90

Air Quality Index Trend

48h · 2 stn

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.

55.3%
Humidity
32.5 km/h
Wind NW
1020.1 hPa
Pressure
14.9
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
25
6.09 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Saint-Louis?

Temperature & Precipitation

PM2.5 Trend

48h · 2 stations
PM2.56.09 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX14.9
Extreme
AD 300×250
Station readings (4 stations within 25 km)
6.09
Median
7.44
Average
4.1
Low
11.97
High
PM2.5 µg/m³ · Model: 5.9 · Bias: -0.2

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

09-05
23.8° 11.0°
1.94 mm
09-06
18.9° 13.5°
16.44 mm
09-07
25.0° 11.0°
3.13 mm
09-08
24.2° 13.7°
0.44 mm
09-09
24.0° 12.5°
0.69 mm
09-10
28.8° 11.8°
09-11
21.5° 7.7°
0.62 mm
Both models agree Avg diff: 5.1°C

Where are air quality stations near Saint-Louis?

6
C.C. 3 Frontières, Alsace, France
0.7 km PM2.5: 1.4 µg/m³
40
C.C. 3 Frontières, Alsace, France
0.7 km PM2.5: 9.6 µg/m³
20
Weil am Rhein, Germany
5.6 km PM2.5: 4.8 µg/m³
17
Weil am Rhein, Germany
5.6 km PM2.5: 4.1 µg/m³
30
Basel Binningen, Switzerland
5.9 km PM2.5: 7.2 µg/m³
–
switzerland-zwingen-reckholderstrasse
17.2 km 30.0°C 42.9% RH PM2.5: 0.0 µg/m³ PM10: 0.0 µg/m³
–
Hauptstraße Schwörstadt
23.4 km 24.0°C 59.0% RH PM2.5: 0.0 µg/m³ PM10: 0.0 µg/m³
16
Sud, Mulhouse, Alsace, France
24.7 km PM2.5: 3.8 µg/m³
53
Sud, Mulhouse, Alsace, France
24.7 km PM2.5: 13.1 µg/m³
16
Sud, Mulhouse, Alsace, France
24.7 km PM2.5: 3.8 µg/m³

What cities are near Saint-Louis?

29 Basel 22 Weil am Rhein 29 Allschwil 23 Riehen 23 Lörrach 28 Muttenz 32 Reinach 26 Rheinfelden 21 Schopfheim 16 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 2026-09-05T12:48 UTC.