Air Quality in Les Ulis, France

Clear
21.0°C · 26.8% humidity
21.0°
Feels 21.0°
10
Good
Air quality is satisfactory. Enjoy outdoor activities.
8 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
6 5am
9
12
10 8am
7
7
27 11am
27
27
7 2pm
27
27
27 5pm
27
7
7 8pm
7
7
7 11pm
7
7
7 2am
27
7
Station readings
6
9
12
CAMS model adj -27
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 · 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.

26.8%
Humidity
26.1 km/h
Wind ESE
1013.6 hPa
Pressure
1.4
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5
10
2.27 µg/m³
PM10▲
19
20.55 µg/m³
050100150200300500

What is the weather forecast for Les Ulis?

Temperature & Precipitation

PM2.5 Trend

47h · 3 stations
PM2.52.27 µg/m³ ✓ WHO
Good
PM1020.55 µg/m³
Good
UV INDEX1.4
Low
AD 300×250
Station readings (8 stations within 25 km)
2.27
Median
4.4
Average
1.27
Low
6.2
High
PM2.5 µg/m³ · Model: 7.35 · Bias: +5.1

What is the 7-day forecast for Les Ulis?

07-22
29.8° 21.0°
07-23
24.3° 21.4°
0.13 mm
07-24
25.6° 19.3°
0.5 mm
07-25
34.3° 15.5°
07-26
29.7° 17.9°
0.13 mm
07-27
29.1° 19.0°
07-28
28.2° 17.1°
Both models agree Avg diff: 3.1°C

Where are air quality stations near Les Ulis?

12
rue de Gometz
1.9 km PM2.5: 3.0 µg/m³ PM10: 3.0 µg/m³
37
Rn20 Montlhery, Paris
8.6 km PM2.5: 8.9 µg/m³
56
Paris Stade Lenglen, Paris
18.1 km PM2.5: 14.5 µg/m³
23
Paris Stade Lenglen, Paris
18.1 km PM2.5: 5.5 µg/m³
31
Paris Stade Lenglen, Paris
18.1 km PM2.5: 7.4 µg/m³
48
Vitry-sur-seine, Paris
18.4 km PM2.5: 11.5 µg/m³
44
Vitry-sur-seine, Paris
18.4 km PM2.5: 10.6 µg/m³
15
Arcueil
18.7 km PM2.5: 3.7 µg/m³ PM10: 4.1 µg/m³
46
Place Victor Basch, Paris
19.9 km PM2.5: 11.0 µg/m³
31
Avenue Des Champs Elysees, Paris
23.3 km PM2.5: 7.4 µg/m³

What cities are near Les Ulis?

11 Orsay 9 Gif-sur-Yvette 16 Palaiseau 17 Longjumeau 18 Massy 18 Verrières-le-Buisson 18 Vélizy-Villacoublay 18 Chilly-Mazarin 15 Saint-Michel-sur-Orge 16 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 2026-07-22T06:26 UTC.