Air Quality in Saint-Louis, France
Cloudy
11.0°C · 82.2% humidity
11.0°
Feels 11.0°
38
Good
Air quality is satisfactory. Enjoy outdoor activities.
3 stations
Nearby Monitoring Stations
AQI Forecast
Calibrated
8
11pm
18
5
38
2am
58
52
49
5am
26
24
23
8am
15
14
11
11am
13
13
12
2pm
19
39
39
5pm
39
39
39
8pm
39
39
Station readings
8
18
5
12
CAMS model
adj -15
25
27
27
27
54
54
54
34
34
34
27
27
25
27
27
27
34
54
54
54
54
54
54
54
Air Quality Index Trend
48h · 1 stnSaint-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. Current PM2.5 concentration in Saint-Louis is 1.8× the WHO annual guideline of 5 µg/m³.
82.2%
Humidity
19.0 km/h
Wind S
1024.4 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
9.07 µg/m³
PM10
13.7 µg/m³
050100150200300500
What is the weather forecast for Saint-Louis?
Temperature & Precipitation
PM2.5 Trend
48h · 1 stationPM2.59.07 µg/m³
✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
Station readings (3 stations within 25 km)
9.07
Median
5.08
Average
2.14
Low
10.1
High
PM2.5 µg/m³ · Model: 6.5 · Bias: -2.6
What is the 7-day forecast for Saint-Louis?
05-29
21.8° 11.0°
1.13 mm
05-30
15.4° 10.1°
6.19 mm
05-31
22.7° 10.4°
1.69 mm
06-01
24.2° 14.1°
4.87 mm
06-02
23.7° 12.3°
15.12 mm
06-03
17.6° 9.1°
0.69 mm
06-04
24.2° 17.1°
0.81 mm
Both models agree
Avg diff: 5.5°C
Where are air quality stations near Saint-Louis?
159
C.C. 3 Frontières, Alsace, France
29
Weil am Rhein, Germany
12
switzerland-zwingen-reckholderstrasse
–
Hauptstraße Schwörstadt
65
Schwarzwald-Süd, Germany
36
Schwarzwald-Süd, Germany
What cities are near Saint-Louis?
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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 2026-05-29T00:27 UTC.