Air Quality in Guyancourt, France

Windy
19.9°C · 36.9% humidity
19.9°
Feels 19.9°
19
Good
Air quality is satisfactory. Enjoy outdoor activities.
9 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
9 2pm
7
10
19 5pm
14
11
10 8pm
10
9
8 11pm
15
14
14 2am
14
13
13 5am
13
6
6 8am
6
6
6 11am
6
4
Station readings
9
7
10
CAMS model adj -21
34
24
24
24
24
24
25
27
27
27
34
34
34
34
34
34
34
27
27
27
27
27
27
25
AD 728×90

Air Quality Index Trend

47h · 3 stn

Guyancourt'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.

36.9%
Humidity
40.6 km/h
Wind NE
1025.8 hPa
Pressure
2.9
UV Moderate
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
19
4.55 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Guyancourt?

Temperature & Precipitation

PM2.5 Trend

47h · 3 stations
PM2.54.55 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX2.9
Moderate
AD 300×250
Station readings (9 stations within 25 km)
4.55
Median
6.08
Average
0.99
Low
10.3
High
PM2.5 µg/m³ · Model: 5.9 · Bias: +1.4

What is the 7-day forecast for Guyancourt?

09-05
24.9° 13.0°
0.25 mm
09-06
23.4° 15.8°
0.13 mm
09-07
22.1° 13.2°
12.06 mm
09-08
24.2° 14.3°
3.13 mm
09-09
25.7° 12.1°
0.31 mm
09-10
25.0° 13.9°
09-11
20.8° 13.6°
0.81 mm
Both models agree Avg diff: 4.1°C

Where are air quality stations near Guyancourt?

4
rue de Gometz
11.0 km PM2.5: 1.0 µg/m³ PM10: 1.2 µg/m³
16
Paris Stade Lenglen, Paris
15.7 km PM2.5: 3.8 µg/m³
12
Paris Stade Lenglen, Paris
15.7 km PM2.5: 2.9 µg/m³
11
Paris Stade Lenglen, Paris
15.7 km PM2.5: 2.6 µg/m³
33
La Defense, Paris
17.9 km PM2.5: 7.9 µg/m³
34
La Defense, Paris
17.9 km PM2.5: 8.2 µg/m³
41
Place Victor Basch, Paris
19.5 km PM2.5: 9.8 µg/m³
7
Arcueil
19.5 km PM2.5: 1.6 µg/m³ PM10: 1.6 µg/m³
23
Avenue Des Champs Elysees, Paris
20.4 km PM2.5: 5.5 µg/m³
20
Avenue Des Champs Elysees, Paris
20.4 km PM2.5: 4.8 µg/m³

What cities are near Guyancourt?

20 Saint-Cyr-l'École 14 Montigny-le-Bretonneux 15 Saint-Quentin-en-Yvelines 15 Trappes 21 Versailles 22 Le Chesnay 20 Viroflay 20 Les Clayes-sous-Bois 20 Élancourt 19 Vélizy-Villacoublay
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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 2026-09-05T15:52 UTC.