Air Quality in Les Ulis, France

Windy
27.7°C · 25.8% humidity
27.7°
Feels 27.7°
12
Good
Air quality is satisfactory. Enjoy outdoor activities.
3 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
20 3am
21
22
12 6am
14
15
9 9am
10
11
11 12pm
11
12
12 3pm
12
12
12 6pm
12
12
19 9pm
39
39
39 12am
39
39
Station readings
20
21
22
CAMS model adj -15
34
34
34
34
34
34
27
27
27
27
27
27
27
27
27
27
27
27
34
54
54
54
54
54
AD 728×90

Air Quality Index Trend

47h · 4 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.

25.8%
Humidity
52.9 km/h
Wind W
1013.5 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5
12
2.87 µg/m³
PM10▲
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Les Ulis?

Temperature & Precipitation

PM2.5 Trend

47h · 4 stations
PM2.52.87 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
Station readings (3 stations within 25 km)
2.87
Median
2.38
Average
1.83
Low
2.88
High
PM2.5 µg/m³ · Model: 7.0 · Bias: +4.1

What is the 7-day forecast for Les Ulis?

08-03
37.3° 19.1°
1.25 mm
08-04
28.8° 19.1°
0.19 mm
08-05
33.6° 21.4°
08-06
33.6° 17.1°
0.06 mm
08-07
33.0° 16.0°
0.62 mm
08-08
27.5° 18.2°
08-09
24.2° 17.7°
Both models agree Avg diff: 3.9°C

Where are air quality stations near Les Ulis?

22
rue de Gometz
1.9 km PM2.5: 5.3 µg/m³ PM10: 5.3 µg/m³
14
Rn20 Montlhery, Paris
8.6 km PM2.5: 3.4 µg/m³
56
Paris Stade Lenglen, Paris
18.1 km PM2.5: 14.5 µg/m³
13
Paris Stade Lenglen, Paris
18.1 km PM2.5: 3.1 µg/m³
57
Paris Stade Lenglen, Paris
18.1 km PM2.5: 15.0 µg/m³
36
Vitry-sur-seine, Paris
18.4 km PM2.5: 8.6 µg/m³
8
Vitry-sur-seine, Paris
18.4 km PM2.5: 1.9 µg/m³
15
Arcueil
18.7 km PM2.5: 3.6 µg/m³ PM10: 3.6 µg/m³
18
Place Victor Basch, Paris
19.9 km PM2.5: 4.3 µg/m³
40
Place Victor Basch, Paris
19.9 km PM2.5: 9.6 µg/m³

What cities are near Les Ulis?

13 Orsay 12 Gif-sur-Yvette 19 Palaiseau 20 Longjumeau 21 Massy 21 Verrières-le-Buisson 24 Vélizy-Villacoublay 21 Chilly-Mazarin 11 Saint-Michel-sur-Orge 10 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 2026-08-08T04:50 UTC.