Air Quality in Saint-Germain-en-Laye, France

Clear
21.1°C · 28.4% humidity
21.1°
Feels 21.1°
18
Good
Air quality is satisfactory. Enjoy outdoor activities.
8 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
8 5am
10
12
18 8am
15
14
32 11am
31
31
10 2pm
30
30
29 5pm
29
9
9 8pm
9
9
9 11pm
9
9
9 2am
29
9
Station readings
8
10
12
15
CAMS model adj -25
34
34
34
34
34
34
54
54
54
34
54
54
54
54
34
34
34
34
34
34
34
34
54
34
AD 728×90

Air Quality Index Trend

48h · 3 stn

Saint-Germain-en-Laye'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.

28.4%
Humidity
18.8 km/h
Wind E
1013.5 hPa
Pressure
1.4
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5
18
4.39 µg/m³
PM10▲
19
20.55 µg/m³
050100150200300500

What is the weather forecast for Saint-Germain-en-Laye?

Temperature & Precipitation

PM2.5 Trend

48h · 3 stations
PM2.54.39 µg/m³ ✓ WHO
Good
PM1020.55 µg/m³
Good
UV INDEX1.4
Low
AD 300×250
Station readings (8 stations within 25 km)
4.39
Median
4.42
Average
2.9
Low
5.8
High
PM2.5 µg/m³ · Model: 7.1 · Bias: +2.7

What is the 7-day forecast for Saint-Germain-en-Laye?

07-22
29.1° 21.1°
07-23
23.8° 21.0°
07-24
25.2° 18.3°
5.75 mm
07-25
32.9° 14.0°
07-26
27.1° 14.9°
07-27
27.9° 17.9°
07-28
28.0° 17.5°
Both models agree Avg diff: 3.0°C

Where are air quality stations near Saint-Germain-en-Laye?

56
La Defense, Paris
11.0 km PM2.5: 14.5 µg/m³
56
La Defense, Paris
11.0 km PM2.5: 14.5 µg/m³
23
Paris Stade Lenglen, Paris
15.0 km PM2.5: 5.5 µg/m³
31
Paris Stade Lenglen, Paris
15.0 km PM2.5: 7.4 µg/m³
36
Paris Stade Lenglen, Paris
15.0 km PM2.5: 8.6 µg/m³
12
Gennevilliers, Paris
15.4 km PM2.5: 2.9 µg/m³
27
Gennevilliers, Paris
15.4 km PM2.5: 6.5 µg/m³
53
Gennevilliers, Paris
15.4 km PM2.5: 13.1 µg/m³
35
Gennevilliers, Paris
15.4 km PM2.5: 8.4 µg/m³
9
Avenue Des Champs Elysees, Paris
16.5 km PM2.5: 2.2 µg/m³

What cities are near Saint-Germain-en-Laye?

18 Le Pecq 18 Le Vésinet 18 Marly-le-Roi 18 Montesson 18 Poissy 18 Chatou 18 La Celle-Saint-Cloud 18 Carrières-sous-Poissy 18 Achères 18 Maisons-Laffitte
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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 2026-07-22T06:44 UTC.