Air Quality in Les Ulis, France

Windy
21.0°C · 34.1% humidity
21.0°
Feels 21.0°
20
Good
Air quality is satisfactory. Enjoy outdoor activities.
6 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
7 6pm
8
46
20 9pm
16
16
23 12am
23
23
23 3am
23
23
23 6am
16
16
16 9am
16
16
16 12pm
14
14
16 3pm
16
16
Station readings
7
8
46
CAMS model adj -11
24
24
25
27
27
27
34
34
34
34
34
34
34
27
27
27
27
27
27
25
25
27
27
27
AD 728×90

Air Quality Index Trend

47h · 3 stn

Les Ulis'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.

34.1%
Humidity
43.2 km/h
Wind ENE
1025.7 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
20
4.89 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Les Ulis?

Temperature & Precipitation

PM2.5 Trend

47h · 3 stations
PM2.54.89 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
Station readings (6 stations within 25 km)
4.89
Median
5.35
Average
1.91
Low
8.6
High
PM2.5 µg/m³ · Model: 6.5 · Bias: +1.6

What is the 7-day forecast for Les Ulis?

09-05
25.1° 14.1°
0.19 mm
09-06
24.1° 16.8°
0.13 mm
09-07
22.6° 14.0°
12.62 mm
09-08
24.6° 15.8°
3.44 mm
09-09
27.8° 14.6°
0.25 mm
09-10
25.1° 15.0°
09-11
20.7° 14.0°
1.56 mm
Both models agree Avg diff: 3.7°C

Where are air quality stations near Les Ulis?

46
rue de Gometz
1.9 km PM2.5: 11.1 µg/m³ PM10: 12.4 µg/m³
11
Arcueil
18.7 km PM2.5: 2.6 µg/m³ PM10: 3.4 µg/m³
42
Place Victor Basch, Paris
19.9 km PM2.5: 10.1 µg/m³
30
Place Victor Basch, Paris
19.9 km PM2.5: 7.2 µg/m³
13
Avenue Des Champs Elysees, Paris
23.3 km PM2.5: 3.1 µg/m³
58
Paris
23.6 km PM2.5: 15.4 µg/m³
18
Paris
23.6 km PM2.5: 4.3 µg/m³
33
Paris
23.6 km PM2.5: 7.9 µg/m³
48
Paris
23.6 km PM2.5: 11.5 µg/m³
37
Paris
23.6 km PM2.5: 8.9 µg/m³

What cities are near Les Ulis?

21 Orsay 20 Gif-sur-Yvette 23 Palaiseau 22 Longjumeau 24 Massy 23 Verrières-le-Buisson 25 Vélizy-Villacoublay 24 Chilly-Mazarin 20 Saint-Michel-sur-Orge 19 Sainte-Geneviève-des-Bois
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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 2026-09-05T19:26 UTC.