Air Quality in Saint-Louis, France

Windy
17.1°C · 55.8% humidity
17.1°
Feels 17.1°
35
Good
Air quality is satisfactory. Enjoy outdoor activities.
4 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
6 1pm
6
13
35 4pm
33
33
33 7pm
33
33
33 10pm
33
33
33 1am
33
33
33 4am
33
33
33 7am
13
13
13 10am
6
6
Station readings 6h ago
AQI 4
PM2.5 1.0 µg/m³ · 6h ago
CAMS model adj -21
27
27
34
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
34
34
34
27
27
AD 728×90

Air Quality Index Trend

42h · 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. Current PM2.5 concentration in Saint-Louis is 1.7× the WHO annual guideline of 5 µg/m³.

55.8%
Humidity
41.8 km/h
Wind NNW
1022.7 hPa
Pressure
12.9
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
35
8.52 µg/m³
PM10
25
27.45 µg/m³
050100150200300500

What is the weather forecast for Saint-Louis?

Temperature & Precipitation

PM2.5 Trend

42h · 2 stations
PM2.58.52 µg/m³ ✓ WHO
Good
PM1027.45 µg/m³
Good
UV INDEX12.9
Extreme
AD 300×250
Station readings (4 stations within 25 km)
8.52
Median
11.57
Average
8.4
Low
14.5
High
PM2.5 µg/m³ · Model: 10.0 · Bias: +1.5

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: 5.2°C

Where are air quality stations near Saint-Louis?

65
C.C. 3 Frontières, Alsace, France
0.7 km PM2.5: 18.8 µg/m³
55
Weil am Rhein, Germany
5.6 km PM2.5: 14.0 µg/m³
–
switzerland-zwingen-reckholderstrasse
17.2 km 39.1°C 15.0% RH PM2.5: 0.0 µg/m³ PM10: 0.0 µg/m³
–
Hauptstraße Schwörstadt
23.4 km 34.0°C 23.9% RH PM2.5: 0.0 µg/m³ PM10: 0.0 µg/m³
30
Schwarzwald-Süd, Germany
28.7 km PM2.5: 7.2 µg/m³
42
Schwarzwald-Süd, Germany
28.7 km PM2.5: 10.1 µg/m³

What cities are near Saint-Louis?

42 Basel 48 Weil am Rhein 41 Allschwil 48 Riehen 47 Lörrach 46 Muttenz 45 Reinach 46 Rheinfelden 44 Schopfheim 50 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 2026-05-29T14:30 UTC.