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Saint-Laurent weather forecast

Quebec, Canada · Toronto time · 45.50°, -73.67°

Current conditions · 9:45 AM local

Current conditions in Saint-Laurent

18°C

Overcast

Feels like 16°C

Humidity
92%
Wind
17 km/h WSW
Gusts
27 km/h
UV index
0
Visibility
13.4 km

Right now

Conditions in Saint-Laurent at the moment: overcast, 18 °C. It feels close to the actual reading at 17 °C. Wind is from the WSW at 17 km/h. Humidity stands at 84% with sea-level pressure near 1010 hPa.

At a glance

Today

22° / 15°

Overcast · 37% chance of rain

Tomorrow

23° / 14°

Light drizzle

Upcoming · to Saturday

25° / 14°

Highs 25°, lows 14°. The most active day looks like Friday, when rain chances peak at 74%.

Next 3 days

Today brings overcast with a high of 22 °C and a low of 15 °C. Rain chance peaks at 37%. Tomorrow looks like light drizzle; temperatures run from 14 °C up to 23 °C. Tuesday brings moderate drizzle with a high of 25 °C and a low of 14 °C.

Today

Sun, Jun 21

Overcast

22°15°

Rain chance
37%
Precip
0 mm
Max wind
16 km/h

Tomorrow

Mon, Jun 22

Light drizzle

23°14°

Rain chance
27%
Precip
1.2 mm
Max wind
22 km/h

Tuesday

Tue, Jun 23

Moderate drizzle

25°14°

Rain chance
13%
Precip
1 mm
Max wind
20 km/h

Next 48 hours

  1. 12 AM16°27%11 km/h
  2. 1 AM16°37%6 km/h
  3. 2 AM16°32%7 km/h
  4. 3 AM16°21%8 km/h
  5. 4 AM15°12%6 km/h
  6. 5 AM15°10%7 km/h
  7. 6 AM15°8%6 km/h
  8. 7 AM16°8%11 km/h
  9. 8 AM17°6%10 km/h
  10. 9 AM17°5%15 km/h
  11. 10 AM18°4%16 km/h
  12. 11 AM20°5%14 km/h
  13. 12 PM21°6%15 km/h
  14. 1 PM21°14%15 km/h
  15. 2 PM21°16%13 km/h
  16. 3 PM21°20%13 km/h
  17. 4 PM22°23%16 km/h
  18. 5 PM22°18%16 km/h
  19. 6 PM22°14%8 km/h
  20. 7 PM21°20%12 km/h
  21. 8 PM20°19%8 km/h
  22. 9 PM19°16%5 km/h
  23. 10 PM18°11%9 km/h
  24. 11 PM17°7%6 km/h
  25. 12 AM17°5%6 km/h
  26. 1 AM16°2%5 km/h
  27. 2 AM15°2%7 km/h
  28. 3 AM15°2%7 km/h
  29. 4 AM14°1%5 km/h
  30. 5 AM14°1%7 km/h
  31. 6 AM14°1%8 km/h
  32. 7 AM16°1%9 km/h
  33. 8 AM18°1%8 km/h
  34. 9 AM19°1%7 km/h
  35. 10 AM21°1%7 km/h
  36. 11 AM21°1%7 km/h
  37. 12 PM22°1%9 km/h
  38. 1 PM23°2%11 km/h
  39. 2 PM23°6%11 km/h
  40. 3 PM23°9%12 km/h
  41. 4 PM23°14%11 km/h
  42. 5 PM21°22%22 km/h
  43. 6 PM19°20%15 km/h
  44. 7 PM19°23%14 km/h
  45. 8 PM17°27%12 km/h
  46. 9 PM16°12%7 km/h
  47. 10 PM16°12%7 km/h
  48. 11 PM16°12%6 km/h

In depth

Across Saint-Laurent right now you'll find overcast and a temperature of 18 °C, with the apparent temperature at 17 °C. Today's forecast calls for overcast, topping out near 22 °C before falling back to 15 °C overnight. Winds blow mainly from the WSW around 16 km/h, with gusts up to 31 km/h. Daytime highs hold fairly steady this week, staying within 22 to 25 °C. Rain is in the picture on tomorrow, Thursday, Friday, with roughly 14 mm expected in total across the week. Tomorrow brings light drizzle with a high of 23 °C and a 27% chance of precipitation. The UV index reaches 7 today, so sun protection is sensible during the middle of the day. Sunrise comes at 05:06 and sunset at 20:47, giving 15.7 hours of daylight. Current humidity sits at 84% with pressure near 1010 hPa. Looking further out, Thursday shows moderate rain showers with a high around 24 °C, while Saturday ends the week at 24 °C. Forecast details are refreshed throughout the day as new model runs arrive, so check back for the latest figures.

Air quality

38

Good

US AQI · European AQI 22

Air quality in Saint-Laurent is currently good, with a US AQI of 38 (European AQI 22). The dominant pollutant right now is ozone. Air quality is healthy; no precautions needed. Fine particulate matter (PM2.5) measures 7.6 µg/m³.

Pollutants

PM2.5
7.6 µg/m³
PM10
7.9 µg/m³
Ozone (O₃)
54 µg/m³
NO₂
5.6 µg/m³
SO₂
2.9 µg/m³
CO
129 µg/m³
Dust
0 µg/m³

Sun & UV

Sunrise
5:06 AM
Sunset
8:47 PM
Daylight
15h 41m
Max UV
7.2 High

Wind

Wind
17 km/h
Gusts
27 km/h
Direction
WSW (242°)

Farming weather

Soil temperatures today read surface 17.3 °C, 6 cm 18.8 °C, 18 cm 19.3 °C, 54 cm 16.7 °C. Soil moisture sits at 0-1 cm at 0.41 m³/m³, 3-9 cm at 0.42 m³/m³, 27-81 cm at 0.43 m³/m³. For wheat, the root-zone reading is above the ideal 0.2-0.35 m³/m³ band. ET0 of 26 mm modestly outpaces the 14 mm of forecast rain; light supplemental irrigation may help. A suitable spraying window opens around 06:00 on 2026-06-21, with winds at or below 15 km/h and no rain expected. Projected growing degree days over the next week: wheat 102, maize 64.

Topsoil moisture
0.419 m³/m³
Soil temp
17°C
ET₀ today
3.24 mm
Spray window
~5:00
Rain (next 7d)
13.6 mm
Wind
17 km/h
Humidity
92%

Full farming outlook for Saint-Laurent →

Advisory summary

No weather alert thresholds are crossed for Saint-Laurent in the current forecast (derived from forecast data, not official warnings). Conditions may still change — check back for updates.

All data for Saint-Laurent
Every forecast variable for Saint-Laurent with human-readable labels
VariableValue
CitySaint-Laurent, Quebec, Canada
Coordinates45.50008, -73.66585
Elevation41 m
TimezoneAmerica/Toronto
Population98,828
Observed at (local)9:45 AM
Temperature (2 m)18°C
Apparent temperature16°C
Relative humidity (2 m)92%
Dew point (2 m)15°C
Precipitation (last hour)0 mm
Rain0 mm
Showers0 mm
Snowfall0 cm
Weather code (WMO)3
Cloud cover100%
Surface pressure1005 hPa
Sea-level pressure1010 hPa
Wind speed (10 m)17 km/h
Wind gusts (10 m)27 km/h
Wind direction (10 m)242° (WSW)
Visibility13.4 km
UV index0
Day / nightDay
Today max / min22°C / 15°C
Today feels-like max / min22°C / 15°C
Today precipitation sum0 mm
Today rain sum0 mm
Today snowfall sum0 cm
Today max precip probability37%
Today max wind / gusts16 km/h / 31 km/h
Dominant wind direction243° (WSW)
Sunrise / sunset5:06 AM / 8:47 PM
Daylight duration15h 41m
Sunshine duration10h 54m
Max UV index7.2
Reference evapotranspiration (ET₀)3.24 mm
Topsoil moisture (0–1 cm)0.419 m³/m³
Surface soil temperature17°C
US AQI38
European AQI22
PM2.57.6 µg/m³
PM107.9 µg/m³
Ozone (O₃)54 µg/m³
Nitrogen dioxide (NO₂)5.6 µg/m³
Sulphur dioxide (SO₂)2.9 µg/m³
Carbon monoxide (CO)129 µg/m³
Dust0 µg/m³

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Frequently asked questions

Will it rain in Saint-Laurent tomorrow?

Rain is unlikely in Saint-Laurent tomorrow; the precipitation chance stays around 27%.

What is the temperature in Saint-Laurent today?

Today Saint-Laurent sees overcast with a high of 22 °C and a low of 15 °C.

How hot will it be in Saint-Laurent tomorrow?

Tomorrow's high in Saint-Laurent is forecast at 23 °C with light drizzle.

Is it windy in Saint-Laurent today?

No, not especially; gusts only reach up to 31 km/h today.

What is the UV index in Saint-Laurent today?

The UV index peaks at 7 today, which is high.

What time is sunrise and sunset in Saint-Laurent today?

The sun rises at 05:06 and sets at 20:47 local time.

Is the air quality in Saint-Laurent good today?

Air quality is good right now, with a US AQI reading of 38.