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
AD 728×90

Air Quality Index Trend

48h · 1 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. 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▲
38
9.07 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Saint-Louis?

Temperature & Precipitation

PM2.5 Trend

48h · 1 station
PM2.59.07 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
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
0.7 km PM2.5: 71.0 µg/m³
29
Weil am Rhein, Germany
5.6 km PM2.5: 7.0 µg/m³
12
switzerland-zwingen-reckholderstrasse
17.2 km 22.0°C 48.0% RH PM2.5: 2.8 µg/m³ PM10: 3.0 µg/m³
–
Hauptstraße Schwörstadt
23.4 km 20.0°C 61.0% RH PM2.5: 0.0 µg/m³ PM10: 0.0 µg/m³
65
Schwarzwald-Süd, Germany
28.7 km PM2.5: 18.8 µg/m³
36
Schwarzwald-Süd, Germany
28.7 km PM2.5: 8.6 µg/m³

What cities are near Saint-Louis?

36 Basel 42 Weil am Rhein 33 Allschwil 42 Riehen 40 Lörrach 32 Muttenz 22 Reinach 17 Rheinfelden 19 Schopfheim 42 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 2026-05-29T00:27 UTC.