Current Conditions

Alta Vista, Ontario

61°F16°C

Clear

Wind

NE 7 mph11 km/h

Humidity

46%

Cloud Cover

As of Tuesday, September 22, 2026 at 2:39 PM EDT

Today's Outlook

Day

Mostly clear and mild, with a high of 62°F17°C and morning low of 43°F6°C. Light wind from the NE around 6 mph10 km/h. Dry air.

Night

Mostly clear, with a low around 45°F7°C. Light wind from the ENE around 5 mph8 km/h.

7-Day Forecast

Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
Clear	High 62°F17°C	Low 43°F6°CFeels 39°F4°C	Precip 0 in0 mm—	Cloud 8%	Wind NE 6 mph9 km/h	Tuesday: Mostly clear and mild, with a high of 62°F17°C and morning low of 43°F6°C. Light wind from the NE around 6 mph10 km/h. Dry air. Tuesday Night: Mostly clear, with a low around 45°F7°C. Light wind from the ENE around 5 mph8 km/h.
Clear	High 67°F19°C	Low 40°F5°CFeels 36°F2°C	Precip 0 in0 mm—	Cloud 0%	Wind ENE 6 mph10 km/h	Wednesday: Mostly clear and mild, with a high of 67°F19°C and morning low of 43°F6°C. Breezy from the ENE at 7 mph11 km/h. Dry air. Wednesday Night: Mostly clear, with a low around 40°F5°C. Breezy from the ENE at 6 to 7 mph10 to 11 km/h.
Clear	High 70°F21°C	Low 39°F4°CFeels 35°F2°C	Precip 0 in0 mm—	Cloud 1%	Wind NE 4 mph7 km/h	Thursday: Mostly clear and warm, with a high of 70°F21°C and morning low of 42°F5°C. Light wind from the NE around 4 mph7 km/h. Dry air. Thursday Night: Mostly clear, with a low around 39°F4°C. Light wind from the NE around 5 mph7 km/h.
Clear	High 74°F23°C	Low 43°F6°CFeels 40°F4°C	Precip 0 in0 mm—	Cloud 32%	Wind NNE 5 mph8 km/h	Friday: Partly cloudy and warm, with a high of 74°F23°C and morning low of 46°F8°C. Light wind from the NNE around 5 mph8 km/h. Dry air. Friday Night: Partly cloudy, with a low around 43°F6°C. Light wind from the N around 5 mph9 km/h.
Partly Cloudy	High 72°F22°C	Low 50°F10°CFeels 46°F8°C	Precip 0.01 in0.2 mm4%	Cloud 70%	Wind NNE 8 mph13 km/h	Saturday: Mostly cloudy and warm, with a high of 72°F22°C and morning low of 51°F11°C. Breezy from the NNE at 8 to 9 mph13 to 14 km/h. Dry air. Saturday Night: Mostly cloudy, with a low around 50°F10°C. Breezy from the NNE at 8 to 9 mph12 to 14 km/h.
Drizzle	High 67°F19°C	Low 55°F13°C	Precip 0.11 in2.7 mm29%	Cloud 79%	Wind NE 9 mph14 km/h	Sunday: Overcast and mild, with a high of 67°F19°C and morning low of 55°F13°C. Breezy from the NE at 9 mph14 km/h. 29% chance of drizzle throughout the day. Dry air. Sunday Night: Mostly cloudy, with a low around 55°F13°C. Breezy from the NE at 8 to 9 mph13 to 14 km/h. 23% chance of drizzle throughout the night.
Drizzle	High 65°F18°C	Low 54°F12°C	Precip 0.06 in1.5 mm22%	Cloud 74%	Wind NE 6 mph9 km/h	Monday: Mostly cloudy and mild, with a high of 65°F18°C and morning low of 54°F12°C. Light wind from the NE around 6 mph9 km/h. 22% chance of drizzle throughout the day. Monday Night: Mostly cloudy, with a low around 54°F12°C. Breezy from the NE at 6 to 7 mph9 to 11 km/h. 22% chance of drizzle throughout the night.

15-Day Forecast

	Day	High	Low	Precip	Cloud Cover	Condition	Wind
	TuesdaySep 22	62°F17°C	43°F6°C Feels 39°F4°C	0 in0 mm· —	8%	Clear	NE 6 mph9 km/h
DayMostly clear and mild, with a high of 62°F17°C and morning low of 43°F6°C. Light wind from the NE around 6 mph10 km/h. Dry air. NightMostly clear, with a low around 45°F7°C. Light wind from the ENE around 5 mph8 km/h.
	WednesdaySep 23	67°F19°C	40°F5°C Feels 36°F2°C	0 in0 mm· —	0%	Clear	ENE 6 mph10 km/h
DayMostly clear and mild, with a high of 67°F19°C and morning low of 43°F6°C. Breezy from the ENE at 7 mph11 km/h. Dry air. NightMostly clear, with a low around 40°F5°C. Breezy from the ENE at 6 to 7 mph10 to 11 km/h.
	ThursdaySep 24	70°F21°C	39°F4°C Feels 35°F2°C	0 in0 mm· —	1%	Clear	NE 4 mph7 km/h
DayMostly clear and warm, with a high of 70°F21°C and morning low of 42°F5°C. Light wind from the NE around 4 mph7 km/h. Dry air. NightMostly clear, with a low around 39°F4°C. Light wind from the NE around 5 mph7 km/h.
	FridaySep 25	74°F23°C	43°F6°C Feels 40°F4°C	0 in0 mm· —	32%	Clear	NNE 5 mph8 km/h
DayPartly cloudy and warm, with a high of 74°F23°C and morning low of 46°F8°C. Light wind from the NNE around 5 mph8 km/h. Dry air. NightPartly cloudy, with a low around 43°F6°C. Light wind from the N around 5 mph9 km/h.
	SaturdaySep 26	72°F22°C	50°F10°C Feels 46°F8°C	0.01 in0.2 mm· 4%	70%	Partly Cloudy	NNE 8 mph13 km/h
DayMostly cloudy and warm, with a high of 72°F22°C and morning low of 51°F11°C. Breezy from the NNE at 8 to 9 mph13 to 14 km/h. Dry air. NightMostly cloudy, with a low around 50°F10°C. Breezy from the NNE at 8 to 9 mph12 to 14 km/h.
	SundaySep 27	67°F19°C	55°F13°C	0.11 in2.7 mm· 29%	79%	Drizzle	NE 9 mph14 km/h
DayOvercast and mild, with a high of 67°F19°C and morning low of 55°F13°C. Breezy from the NE at 9 mph14 km/h. 29% chance of drizzle throughout the day. Dry air. NightMostly cloudy, with a low around 55°F13°C. Breezy from the NE at 8 to 9 mph13 to 14 km/h. 23% chance of drizzle throughout the night.
	MondaySep 28	65°F18°C	54°F12°C	0.06 in1.5 mm· 22%	74%	Drizzle	NE 6 mph9 km/h
DayMostly cloudy and mild, with a high of 65°F18°C and morning low of 54°F12°C. Light wind from the NE around 6 mph9 km/h. 22% chance of drizzle throughout the day. NightMostly cloudy, with a low around 54°F12°C. Breezy from the NE at 6 to 7 mph9 to 11 km/h. 22% chance of drizzle throughout the night.
	TuesdaySep 29	69°F21°C	52°F11°C	0.02 in0.4 mm· 7%	56%	Partly Cloudy	NNW 4 mph7 km/h
DayMostly cloudy and warm, with a high of 69°F21°C and morning low of 53°F12°C. Light wind from the NNW around 4 mph7 km/h. NightMostly cloudy, with a low around 52°F11°C. Light wind from the N around 5 mph7 km/h.
	WednesdaySep 30	70°F21°C	51°F11°C	0.03 in0.7 mm· 13%	72%	Drizzle	SSE 5 mph8 km/h
DayMostly cloudy and warm, with a high of 70°F21°C and morning low of 52°F11°C. Light wind from the SSE around 5 mph8 km/h. NightMostly cloudy, with a low around 51°F11°C. Light wind from the SE around 5 mph8 km/h. 13% chance of drizzle in the evening.
	ThursdayOct 1	68°F20°C	55°F13°C	0.13 in3.3 mm· 23%	71%	Light Rain	S 7 mph11 km/h
DayMostly cloudy and mild, with a high of 68°F20°C and morning low of 55°F13°C. Breezy from the SSW at 7 to 8 mph11 to 12 km/h. 21% chance of drizzle throughout the day. NightMostly cloudy, with a low around 55°F13°C. Breezy from the S at 7 mph11 km/h. 23% chance of showers throughout the night.
	FridayOct 2	66°F19°C	53°F12°C	0.12 in3 mm· 20%	65%	Showers	W 7 mph11 km/h
DayMostly cloudy and mild, with a high of 66°F19°C and morning low of 53°F12°C. Breezy from the W at 7 mph11 km/h. 19% chance of drizzle throughout the day. NightMostly cloudy, with a low around 53°F12°C. Breezy from the WSW at 7 mph11 km/h. 20% chance of showers throughout the night.
	SaturdayOct 3	65°F18°C	51°F10°C	0.14 in3.6 mm· 27%	66%	Showers	S 6 mph10 km/h
DayMostly cloudy and mild, with a high of 65°F18°C and morning low of 51°F11°C. Breezy from the S at 7 mph11 km/h. 27% chance of showers throughout the day. Dry air. NightMostly cloudy, with a low around 51°F10°C. Light wind from the S around 6 mph10 km/h. 19% chance of showers throughout the night.
	SundayOct 4	63°F17°C	52°F11°C	0.14 in3.6 mm· 26%	72%	Light Rain	SW 7 mph11 km/h
DayMostly cloudy and mild, with a high of 63°F17°C and morning low of 52°F11°C. Breezy from the SW at 7 to 8 mph11 to 12 km/h. 26% chance of light rain throughout the day. Dry air. NightMostly cloudy, with a low around 52°F11°C. Breezy from the SW at 7 mph11 km/h. 21% chance of drizzle throughout the night.
	MondayOct 5	61°F16°C	49°F9°C Feels 46°F8°C	0.13 in3.2 mm· 22%	63%	Drizzle	W 7 mph11 km/h
DayMostly cloudy and mild, with a high of 61°F16°C and morning low of 49°F9°C. Breezy from the W at 7 to 8 mph12 to 13 km/h. 22% chance of drizzle throughout the day. Dry air. NightMostly cloudy, with a low around 49°F9°C. Breezy from the W at 7 mph11 km/h. 20% chance of drizzle throughout the night.
	TuesdayOct 6	62°F16°C	47°F8°C Feels 44°F7°C	0.1 in2.6 mm· 22%	59%	Drizzle	WSW 7 mph11 km/h
DayMostly cloudy and mild, with a high of 62°F16°C and morning low of 47°F8°C. Breezy from the WSW at 7 to 8 mph12 to 13 km/h. 22% chance of drizzle throughout the day. Dry air. NightMostly cloudy, with a low around 47°F8°C. Breezy from the WSW at 7 mph11 km/h. 20% chance of drizzle throughout the night.

Nearby Cities

Ottawa South1 mi2 km Ottawa3 mi4 km Centretown3 mi4 km Gloucester3 mi4 km Vanier4 mi6 km Hull4 mi6 km

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

Pattern	Example	Description
/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=11.5	Find 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: 45.3864°N, 75.6581°W·Elevation: 95m·Timezone: America/Toronto·Population: 24,726