Province in Canada

Ontario Vær Værmelding

Ontario weather: 0°C, overskyet. Time for time forecast, 14-day outlook, UV, air quality and the best time til visit.

☁️ 0°C now🕔 5:39 AM local📅 Best: juni, juli, august and september👥 15.6 million

Risk assessment for Ontario

Derived from the current forecast window - not an official warning.

Fire weather7.9

12 dry days, 0 days above 32°C and humidity at 89%. Hot, dry and windy together is what drives fire spread.

Airborne particulates1

Klarvær air overhead akkurat nå. Aerosol readings cannot separate wildfire smoke from dust, so treat this as a haze signal, not a fire confirmation.

Luftkvalitet and pollen in Ontario

29
Good
Luftkvalitet is satisfactory for everyone.
PM2.51 µg/m³
PM101.2 µg/m³
Ozone58 µg/m³
NO₂0.4 µg/m³
UV-indeks0 · Lav
Airborne hazeKlarvær air

Luftkvalitet: Open-Meteo (CAMS). US AQI scale.

Health and safety today

Skin and UVNo protection needed for most skin types.
PetsShort-haired dogs need a coat below freezing, and paw salt should be rinsed off after walks.
Older adultsCold raises blood pressure. Layer up before going out and keep living areas above 18°C.
ChildrenCover extremities - hands, ears and faces lose heat fastest. Watch for wind chill on the way til school.

Active alerts for Ontario

⚠️ons, okt 28: freezing overnight, -1°C (31°F). Expect ice on roads and trails.
⚠️fre, okt 30: freezing overnight, -2°C (29°F). Expect ice on roads and trails.
⚠️lør, okt 31: freezing overnight, -2°C (29°F). Expect ice on roads and trails.
⚠️man, nov 2: freezing overnight, -0°C (31°F). Expect ice on roads and trails.
⚠️tir, nov 3: freezing overnight, -3°C (27°F). Expect ice on roads and trails.
⚠️ons, nov 4: freezing overnight, -0°C (31°F). Expect ice on roads and trails.

Derived from the forecast. No official alert feed is wired for this country yet.

Se prognosen for Ontario etter tidsintervall

Ontario weather - more answers

Explore Ontario

Every topic we hold for this place, and the same topic for the places around it.

Vær for related places

Frequently asked questions

Where is Ontario?

Ontario is a province in Canada. Its coordinates are 51.2538, -85.3232. It lies in Nord-Amerika.

What is the weather like in Ontario akkurat nå?

It is currently 0°C (32°F) med overskyet. Luftfuktighet is 89% and wind is 11 km/h.

When is the best time til visit Ontario?

juni, juli, august and september offer the most comfortable conditions in Ontario, which has a subarctic climate. februar, november and desember are usually the hardest months for outdoor plans.

What time zone is Ontario in?

Ontario observes America/Toronto (UTC-04:00). The local time is 5:39 AM.

How many people live in Ontario?

Ontario has a population of approximately 15.6 million.

What is the nearest airport til Ontario?

The closest airports are Toronto Pearson International Airport (YYZ), 944 km away.

What are the top things til do in Ontario?

Popular options include CN Tower and Algonquin Provincial Park.

What places are in Ontario?

Ontario covers 4 places in this atlas, including Ottawa, Toronto, Algonquin Provincial Park and Niagara Falls, Ontario.

Related articles

Data sources and methodology

Place dataUSPOTUS Atlas dataset (ca-provinces) - coordinates, hierarchy and facts.
Værmelding and observationsOpen-Meteo (ECMWF and national models).
Luftkvalitet and pollenCopernicus CAMS via Open-Meteo. US AQI scale.
Klima averagesERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years.
MethodScores, comparisons and advice on this page are computed from the inputs above. Distances are straight-line. Nothing is estimated where data is missing - the block is simply not shown.

Last updated oktober 28, 2026 at 5:39 AM local time. Live blocks refresh every 15 minutes; climate averages monthly.

Davil Hofile
Written byWriter at USPOTUS

Davil Hofile is a writer at USPOTUS covering breaking news, NFL updates, viral stories, entertainment, pets, and lifestyle. He specializes in transforming complex news into clear, trustworthy, and engaging articles that help readers quickly understand what's happening across the United States. His reporting follows Google's E-E-A-T guidelines, emphasizing accuracy, credible sources, and practical value for readers.

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