Air Quality in Guyancourt, France

Clear
20.4°C · 28.8% humidity
20.4°
Feels 20.4°
17
Good
Air quality is satisfactory. Enjoy outdoor activities.
8 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
7 5am
10
13
17 8am
14
13
31 11am
30
30
9 2pm
29
29
28 5pm
28
8
8 8pm
8
8
8 11pm
8
8
8 2am
28
8
Station readings
7
10
13
CAMS model adj -26
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

47h · 2 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.

28.8%
Humidity
28.6 km/h
Wind ESE
1013.5 hPa
Pressure
1.4
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5
17
3.97 µg/m³
PM10▲
19
20.55 µg/m³
050100150200300500

What is the weather forecast for Guyancourt?

Temperature & Precipitation

PM2.5 Trend

47h · 2 stations
PM2.53.97 µg/m³ ✓ WHO
Good
PM1020.55 µg/m³
Good
UV INDEX1.4
Low
AD 300×250
Station readings (8 stations within 25 km)
3.97
Median
4.45
Average
2.14
Low
6.2
High
PM2.5 µg/m³ · Model: 7.1 · Bias: +3.1

What is the 7-day forecast for Guyancourt?

07-22
28.7° 20.4°
07-23
23.9° 20.7°
0.13 mm
07-24
25.2° 18.5°
0.88 mm
07-25
33.2° 14.1°
07-26
27.6° 15.6°
0.06 mm
07-27
28.0° 18.1°
07-28
27.8° 16.8°
Both models agree Avg diff: 2.9°C

Where are air quality stations near Guyancourt?

12
rue de Gometz
11.0 km PM2.5: 3.0 µg/m³ PM10: 3.0 µg/m³
23
Paris Stade Lenglen, Paris
15.7 km PM2.5: 5.5 µg/m³
56
Paris Stade Lenglen, Paris
15.7 km PM2.5: 14.5 µg/m³
31
Paris Stade Lenglen, Paris
15.7 km PM2.5: 7.4 µg/m³
56
La Defense, Paris
17.9 km PM2.5: 14.5 µg/m³
56
La Defense, Paris
17.9 km PM2.5: 14.5 µg/m³
46
Place Victor Basch, Paris
19.5 km PM2.5: 11.0 µg/m³
15
Arcueil
19.5 km PM2.5: 3.7 µg/m³ PM10: 4.1 µg/m³
12
Avenue Des Champs Elysees, Paris
20.4 km PM2.5: 2.9 µg/m³
31
Avenue Des Champs Elysees, Paris
20.4 km PM2.5: 7.4 µg/m³

What cities are near Guyancourt?

18 Saint-Cyr-l'École 16 Montigny-le-Bretonneux 16 Saint-Quentin-en-Yvelines 16 Trappes 18 Versailles 19 Le Chesnay 18 Viroflay 19 Les Clayes-sous-Bois 15 Élancourt 18 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 2026-07-22T06:26 UTC.