Current Conditions

Les Ulis, Île-de-France

77°F25°C
Clear

Wind

NW 2 mph4 km/h

Humidity

34%

Cloud Cover

37%

As of Wednesday, September 23, 2026 at 2:27 PM GMT+2

Today's Outlook

Day

Mostly clear and warm, with a high of 80°F27°C and morning low of 49°F9°C. Light wind from the NNW around 3 mph4 km/h. Dry air.

Night

Partly cloudy, with a low around 62°F17°C. Breezy from the NNW at 6 to 7 mph9 to 11 km/h.

7-Day Forecast

DayConditionHigh (°F)Low (°F)Precip (mm)Cloud Cover (%)Wind (mph)
ClearHigh 80°F27°CLow 49°F9°CPrecip 0 in0 mmCloud 22%Wind NNW 4 mph6 km/hWednesday: Mostly clear and warm, with a high of 80°F27°C and morning low of 49°F9°C. Light wind from the NNW around 3 mph4 km/h. Dry air. Wednesday Night: Partly cloudy, with a low around 62°F17°C. Breezy from the NNW at 6 to 7 mph9 to 11 km/h.
CloudyHigh 76°F24°CLow 53°F12°CPrecip 0 in0 mmCloud 87%Wind NE 5 mph8 km/hThursday: Overcast and warm, with a high of 76°F24°C and morning low of 53°F12°C. Light wind from the ENE around 4 mph7 km/h. Thursday Night: Overcast, with a low around 53°F12°C. Light wind from the NE around 5 mph8 km/h.
ClearHigh 82°F28°CLow 48°F9°CPrecip 0 in0 mmCloud 26%Wind SE 5 mph8 km/hFriday: Partly cloudy and warm, with a high of 82°F28°C and morning low of 48°F9°C. Light wind from the SE around 5 mph8 km/h. Dry air. Friday Night: Partly cloudy, with a low around 50°F10°C. Light wind from the ESE around 5 mph9 km/h.
Partly CloudyHigh 74°F24°CLow 55°F13°CPrecip 0 in0 mmCloud 51%Wind W 6 mph10 km/hSaturday: Mostly cloudy and warm, with a high of 74°F24°C and morning low of 55°F13°C. Breezy from the W at 7 mph11 km/h. Saturday Night: Partly cloudy, with a low around 55°F13°C. Light wind from the W around 5 mph9 km/h.
Partly CloudyHigh 77°F25°CLow 54°F12°CPrecip 0.01 in0.2 mm7%Cloud 69%Wind S 5 mph7 km/hSunday: Mostly cloudy and warm, with a high of 77°F25°C and morning low of 54°F12°C. Light wind from the S around 5 mph8 km/h. Sunday Night: Mostly cloudy, with a low around 55°F13°C. Light wind from the SSE around 4 mph6 km/h.
Light RainHigh 75°F24°CLow 60°F15°CPrecip 0.12 in3 mm38%Cloud 88%Wind S 5 mph8 km/hMonday: Overcast and warm, with a high of 75°F24°C and morning low of 60°F15°C. Light wind from the SSW around 5 mph8 km/h. 38% chance of light rain throughout the day. Monday Night: Overcast, with a low around 60°F16°C. Light wind from the SSE around 5 mph8 km/h. 26% chance of drizzle throughout the night.
DrizzleHigh 81°F27°CLow 61°F16°CPrecip 0.03 in0.8 mm20%Cloud 67%Wind SE 7 mph11 km/hTuesday: Mostly cloudy and warm, with a high of 81°F27°C and morning low of 61°F16°C. Breezy from the SSE at 8 to 9 mph13 to 15 km/h. 14% chance of drizzle in the morning. Tuesday Night: Mostly cloudy, with a low around 62°F16°C. Breezy from the SE at 6 to 7 mph10 to 11 km/h. 20% chance of drizzle overnight.

15-Day Forecast

Day High Low Precip Cloud Cover Condition Wind
WednesdaySep 2380°F27°C49°F9°C0 in0 mm· —22%ClearNNW 4 mph6 km/h
ThursdaySep 2476°F24°C53°F12°C0 in0 mm· —87%CloudyNE 5 mph8 km/h
FridaySep 2582°F28°C48°F9°C0 in0 mm· —26%ClearSE 5 mph8 km/h
SaturdaySep 2674°F24°C55°F13°C0 in0 mm· —51%Partly CloudyW 6 mph10 km/h
SundaySep 2777°F25°C54°F12°C0.01 in0.2 mm· 7%69%Partly CloudyS 5 mph7 km/h
MondaySep 2875°F24°C60°F15°C0.12 in3 mm· 38%88%Light RainS 5 mph8 km/h
TuesdaySep 2981°F27°C61°F16°C0.03 in0.8 mm· 20%67%DrizzleSE 7 mph11 km/h
WednesdaySep 3079°F26°C63°F17°C0.14 in3.5 mm· 43%72%Light RainS 7 mph11 km/h
ThursdayOct 171°F22°C61°F16°C0.29 in7.3 mm· 42%73%Light RainSW 6 mph10 km/h
FridayOct 269°F21°C55°F13°C0.07 in1.9 mm· 18%56%DrizzleW 6 mph10 km/h
SaturdayOct 369°F21°C51°F11°C0.04 in0.9 mm· 9%56%Partly CloudyNE 6 mph9 km/h
SundayOct 470°F21°C52°F11°C0.05 in1.3 mm· 15%57%DrizzleE 6 mph10 km/h
MondayOct 569°F21°C52°F11°C0.05 in1.3 mm· 13%56%DrizzleENE 7 mph11 km/h
TuesdayOct 669°F20°C52°F11°C0.04 in1.1 mm· 18%55%DrizzleNE 7 mph12 km/h
WednesdayOct 768°F20°C51°F11°C0.06 in1.4 mm· 13%56%DrizzleNE 7 mph12 km/h

Nearby Cities

About This Forecast

This forecast is powered by WeatherMesh, the world's most advanced and accurate weather model powered by AI. WeatherMesh is built on proprietary data from WindBorne's Global Sounding Balloon constellation — the world's largest fleet of autonomous, long-duration weather balloons — collecting observations across 100% of Earth, including over oceans and remote regions where no other data exists.

WeatherMesh consistently outperforms legacy models in independent benchmarks. View Benchmarks →

Access WeatherMesh forecasts programmatically via our API. API Documentation →

How to Access Weather Forecasts

PatternExampleDescription
/weather/{country}/{city}//weather/united-states/san-francisco/City forecast (canonical URL)
/weather/{city}//weather/tokyo/Shorthand — redirects to most populous match
/weather/{country}/{region}/{city}//weather/united-states/california/san-francisco/With region — redirects to canonical
/weather/nearby?lat={lat}&lon={lon}/weather/nearby?lat=48.1&lon=11.5Find nearest city by coordinates
/weather/{country}//weather/germany/Country index — all cities by region

Country and city names use lowercase slugs with hyphens (e.g. united-states, san-francisco). Arbitrary city names are supported — if not in our database, we geocode the name and serve the forecast for that location.

For programmatic access, use theWindBorne Forecast APIwhich returns structured JSON for any coordinates worldwide.

Coordinates: 48.6817°N, 2.1694°E·Elevation: 87m·Timezone: Europe/Paris·Population: 25,785