Longueuil, Quebec Weather
Longueuil, Quebec — live current conditions, hourly and 7-day forecasts, ECCC alerts, aviation weather, radar and satellite imagery, marine and fishing conditions with a solunar forecast for Longueuil in Longueuil; Montérégie.
Marine forecast and fishing conditions near Longueuil.
Flight conditions near Longueuil. Data source: locating…
About Longueuil, Quebec
Longueuil is a town in Longueuil; Montérégie, Quebec, Canada. With a population of 254,483, Longueuil is a major urban centre in Quebec. Longueuil is located at 45.5139°N, 73.4315°W. It observes Eastern Time (UTC−5 / −4). Postal code area: J4L.
Longueuil occupies a substantial expanse along the southern shore of the St. Lawrence, where the horizon meets the soft, low-lying ridges of the Les Écores. It lies 9.6 km east of Montréal, QC (from Montréal, QC: bearing 87°T), and is situated 10.2 km south of Boucherville. The air here carries a persistent moisture from the river, which at dusk turns the sky into a bruised violet, casting long, contemplative shadows across the flat terrain. Beyond the immediate urban footprint, the land opens toward the distant, preserved quietude of Parc national du Mont-Saint-Bruno, while the subtle flow of the Rivière Sabrevois traces a path through the surrounding plains. Even the light reflecting off the nearby Lac de l'Île Notre-Dame seems to hold a particular, silvered clarity, grounding Longueuil in a landscape that feels simultaneously expansive and deeply settled. The history of Longueuil remains anchored in its origins as a seigneurial estate, a legacy that has evolved into a modern center of aerospace innovation and transit. Longueuil balances these industrial ambitions with a quiet persistence, where the daily movement of commuters and the hum of local enterprise create a steady, industrious pulse. While the memory of its early settlers lingers in the older quarters, the present day is defined by the practicalities of a bustling hub that keeps its gaze fixed on the water. It is a place where the weight of the past sits lightly, allowing the inhabitants to move through their days with a focus on the immediate, tangible needs of a changing world.
Longueuil s’étire avec une patience minérale sur les rives du Saint-Laurent, là où le fleuve impose son rythme souverain aux terres basses et fertiles. Les Écores, ces escarpements naturels, dessinent une frontière protectrice qui sépare les plaines habitées des horizons plus vastes de la Montérégie. À une dizaine de kilomètres, le Parc national du Mont-Saint-Bruno dresse sa masse sombre et boisée, tandis que la Rivière Sabrevois serpente discrètement dans les terres environnantes. Vers l’ouest, le Lac de l’Île Notre-Dame capte les reflets changeants du ciel, offrant aux habitants un miroir calme sous la lumière rasante du crépuscule. L’histoire de Longueuil se lit dans ce sol alluvial, autrefois marqué par les sillons des premières seigneuries et la présence des nations autochtones qui naviguaient ces courants. Aujourd'hui, l'activité industrielle et technologique insuffle une modernité discrète à ce paysage, transformant les anciens champs en espaces de labeur et de vie. Longueuil conserve cette allure de bourgade tournée vers les eaux, où l’air garde toujours une fraîcheur venue du large, rappelant sans cesse que la terre, malgré les constructions et le mouvement des hommes, demeure soumise à la grande respiration du fleuve qui la borde.
Live animated radar for Longueuil and surroundings — RainViewer.
NOAA GOES-19 GEOCOLOR — Canada / Northern U.S. sector. Auto-refreshes every 10 minutes on page reload. Frames the whole country from Newfoundland to the BC coast, plus adjacent Pacific and Atlantic storm approaches.
Source: NOAA/NESDIS GOES-19 · Public domain · Sector code can (Canada / Northern U.S.) · Auto-updates on page reload
| Location | Longueuil, Longueuil; Montérégie, Quebec |
| Coordinates | 45.513947°N, 73.431493°W |
| Timezone | Eastern Time (UTC−5 / −4) |
| Postal FSA | J4L |
| Area Code | 263, 354, 367, 418, 438, 450, 514, 579, 581, 819, 873 |
| Page generated | July 2026 |
| Weather data | Open-Meteo (open-source), Environment and Climate Change Canada |
About This Longueuil, Quebec Weather Page
This page provides live weather conditions and forecasts for Longueuil, Quebec, including current conditions, a 24-hour hourly forecast, 7-day outlook, ECCC extended text forecast, real-time aviation weather (live METAR and TAF reports from the nearest reporting airport, with a modelled estimate shown when no station is in range), precipitation radar and NOAA GOES satellite imagery. Additional sections may include marine and fishing conditions with a solunar forecast for coastal localities, and soil temperature, crop weather and live Water Survey of Canada river gauge data for agricultural areas near a monitored waterway. All data updates automatically on every page visit.
Location data for Longueuil includes coordinates 45.513947°N, 73.431493°W, situated in Longueuil; Montérégie. Postal FSA: J4L. Telephone area code: 263, 354, 367, 418, 438, 450, 514, 579, 581, 819, 873. Timezone: Eastern Time (UTC−5 / −4).
Weather data is sourced from Environment and Climate Change Canada (ECCC) and the open-source Open-Meteo API. Aviation data is sourced from aviationweather.gov, with a modelled estimate used where no nearby reporting station is available. River and stream data is sourced from Water Survey of Canada (WSC) via the ECCC GeoMet realtime hydrometric feed. Marine and solunar data are modelled from Open-Meteo and public sunrise/moon calculations and should be treated as a general guide alongside on-the-water conditions. Radar is provided by RainViewer. Satellite imagery is sourced from NOAA/NESDIS GOES-19 and is public domain.