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Montesson

Île-de-Francetown

Photograph of Montesson
Featured view

Montesson

Total population

14,511

Air quality index

23Good
Elevation23 m
Land area7.36 km²
Coordinates48.91°, 2.15°

Demographic figures from INSEE. Overview below cites Wikipedia and may reference a different year.

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City facts

Elevation
23 m
Area
7.36 km²
head of government
Nicole Bristol
Official website
www.montesson.fr

Sister cities

Facts from Wikidata (CC0).

Overview

Montesson is a commune in the Yvelines department in the Île-de-France region in north-central France. It is located in the western suburbs of Paris.

Read more on Wikipedia

History & geography

Geography

Latitude
48.9076
Longitude
2.1491
Water area
—
View on OpenStreetMap

Coordinates & boundaries from the US Census TIGER/Line shapefiles.

Climate

Air quality

US AQI — Good
23
PM2.5 (µg/m³)
8.1
PM10 (µg/m³)
10.9
Ozone (µg/m³)
35
NO₂ (µg/m³)
14.7

Current readings from Open-Meteo Air Quality API (Copernicus CAMS European reanalysis).

Walkability

Amenities nearby

Wildlife & biodiversity

Observations (last 5 yrs, 10 mi)
496,488
Distinct species (top 10)
10

Most-observed species

  • Common Wood-Pigeon
    Columba palumbus Linnaeus, 1758 · Aves
    17,138
  • Carrion Crow
    Corvus corone Linnaeus, 1758 · Aves
    16,348
  • Great Tit
    Parus major Linnaeus, 1758 · Aves
    15,593
  • Eurasian Magpie
    Pica pica (Linnaeus, 1758) · Aves
    13,425
  • Eurasian Blackbird
    Turdus merula Linnaeus, 1758 · Aves
    13,072
  • Rose-ringed Parakeet
    Psittacula krameri (Scopoli, 1769) · Aves
    12,675
  • Eurasian Blue Tit
    Cyanistes caeruleus (Linnaeus, 1758) · Aves
    12,563
  • Rock Pigeon
    Columba livia J.F.Gmelin, 1789 · Aves
    11,859

Citizen-science & research observations from the Global Biodiversity Information Facility (GBIF).

Earthquake history

Quakes ≥ 2.5 (25 yrs, 62 mi)
1
Largest magnitude
3.1
Largest event
2005-06-01

Most recent

Events from the USGS Earthquake Catalog (global) (FDSN Event Web Service).

Photos

Sights & places nearby

Notable people from here

Geography & sun

Nearby airports

Public attention

Books about this place

Recent natural events nearby

Ground air-quality sensors

Recently spotted species

Brown-lipped Snail
Brown-lipped Snail
Cepaea nemoralis
Seen 2026-06-17
Common Drone Fly
Common Drone Fly
Eristalis tenax
Seen 2026-06-17
mock strawberry
mock strawberry
Potentilla indica
Seen 2026-06-17
common selfheal
common selfheal
Prunella vulgaris
Seen 2026-06-17
Broad-winged Thistle
Broad-winged Thistle
Carduus acanthoides
Seen 2026-06-17
Common Lambsquarters
Common Lambsquarters
Chenopodium album
Seen 2026-06-17
House Sparrow
House Sparrow
Passer domesticus
Seen 2026-06-17
Flax-leaved Horseweed
Flax-leaved Horseweed
Erigeron bonariensis
Seen 2026-06-17
pellitory-of-the-wall
pellitory-of-the-wall
Parietaria judaica
Seen 2026-06-17

Research-grade observations from iNaturalist (within ~15 mi).

Events

Gallery

Official Identifiers

INSEE — French National Institute of Statistics

INSEE code
78418
Department
78
Region
11
Population (Wikidata)
14,549

geo.api.gouv.fr

Sources

  • • Wikipedia
  • • Wikidata
  • • Open-Meteo Air Quality (CAMS)
  • • USGS Earthquake Catalog (global feed)
  • • GBIF (Global Biodiversity Information Facility)
  • • iNaturalist
  • • Wikidata SPARQL (CC0) — population, area, elevation, inception, head of government, Commons image
  • • INSEE — French national statistics, via geo.api.gouv.fr (official commune code, population, surface, department, region)
  • • INSEE — French National Institute of Statistics — geo.api.gouv.fr