Air Quality in Guyancourt, France

Cloudy
11.2°C · 89.5% humidity
11.2°
Feels 11.2°
52
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
11 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
58 2am
58
58
52 5am
54
55
56 8am
56
57
64 11am
84
85
85 2pm
65
65
65 5pm
65
65
65 8pm
58
58
56 11pm
56
56
Station readings
59
60
60
CAMS model adj +31
27
27
27
27
27
27
27
27
27
34
54
54
54
34
34
34
34
34
34
27
27
25
25
25
AD 728×90

Air Quality Index Trend

47h · 1 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.

89.5%
Humidity
10.5 km/h
Wind SW
1010.2 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
52
12.84 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Guyancourt?

Temperature & Precipitation

PM2.5 Trend

47h · 1 station
PM2.512.84 µg/m³ ✓ WHO
Moderate
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
Station readings (11 stations within 25 km)
12.84
Median
12.47
Average
5.8
Low
18.8
High
PM2.5 µg/m³ · Model: 6.5 · Bias: -6.3

What is the 7-day forecast for Guyancourt?

05-30
18.2° 11.2°
2.19 mm
05-31
25.1° 13.4°
06-01
26.2° 11.5°
0.06 mm
06-02
17.5° 11.8°
7.56 mm
06-03
18.9° 11.3°
06-04
21.3° 17.6°
18.25 mm
06-05
18.4° 10.4°
0.75 mm
Both models agree Avg diff: 3.3°C

Where are air quality stations near Guyancourt?

60
rue de Gometz
11.0 km PM2.5: 16.2 µg/m³ PM10: 16.4 µg/m³
7
Paris Stade Lenglen, Paris
15.7 km PM2.5: 1.7 µg/m³
53
Paris Stade Lenglen, Paris
15.7 km PM2.5: 13.1 µg/m³
27
Paris Stade Lenglen, Paris
15.7 km PM2.5: 6.5 µg/m³
51
La Defense, Paris
17.9 km PM2.5: 12.1 µg/m³
55
La Defense, Paris
17.9 km PM2.5: 14.0 µg/m³
44
Place Victor Basch, Paris
19.5 km PM2.5: 10.6 µg/m³
5
Arcueil
19.5 km PM2.5: 1.2 µg/m³ PM10: 1.2 µg/m³
31
Avenue Des Champs Elysees, Paris
20.4 km PM2.5: 7.4 µg/m³
26
Avenue Des Champs Elysees, Paris
20.4 km PM2.5: 6.2 µg/m³

What cities are near Guyancourt?

51 Saint-Cyr-l'École 53 Montigny-le-Bretonneux 53 Saint-Quentin-en-Yvelines 53 Trappes 51 Versailles 51 Le Chesnay 51 Viroflay 49 Les Clayes-sous-Bois 51 Élancourt 51 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 2026-05-30T03:00 UTC.