Ontario weather — 10-day forecast

Temperature, rain, wind and feels-like in Ontario, hour by hour and over 10 days, with the seasonal normal for context.

Now

Reading from 18:00 · NOAA HRRR model

34 °C

Clear sky

Feels like 30 °C

19.9 km/hforce 3

Next 12 h

  • 1834°
  • 1931°
  • 19:46Sunset
  • 2029°
  • 2126°
  • 2225°
  • 2323°
  • 0022°
  • 0121°
  • 0220°
  • 0319°
  • 0419°
  • 0518°
  • 0618°

34°18:00 18°06:00

Humidity
23 %
Dew point
10 °C
Gusts
28.6 km/h
Clouds
2 %
Pressure
1,011 hPa

Grid point 0.6 km away · 3.0 km grid · elevation 303 m

Air quality

The European air-quality index for the city, and the pollutants that set it.

Reading from 17:00
55
Moderate

Index set by Ozone

Ozone
122.8µg/m³
PM2.5
13.4µg/m³
PM10
17.0µg/m³
Nitrogen dioxide
3.4µg/m³
Sulphur dioxide
2.1µg/m³
Carbon monoxide
126.0µg/m³
Dust (AOD)
0.01

Generated using Copernicus Atmosphere Monitoring Service information

Hour by hour

Step-by-step detail: temperature, wind, cloud cover and ultraviolet.

Estimated from a deterministic model, not an ensemble probability.
°C

10 days

Each day's extremes and the chance of rain, out to the end of the run.

18° → 38°

Rain probability (> 1 mm): 50 ECMWF ensemble members.

  • Today

    Clear sky

    37°

    23°

  • Sat

    Clear sky

    38°

    18°

  • Sun

    Clear sky

    36°

    19°

  • Mon

    Mainly clear

    34°

    24°

  • Tue

    Overcast

    29°

    23°

  • Wed

    Partly cloudy

    29°

    21°

  • Thu

    Mainly clear

    27°

    19°

  • Fri

    Mainly clear

    27°

    19°

  • Sat

    Clear sky

    32°

    20°

  • Sun

    Clear sky

    36°

    19°

Sun and UV

Sunrise, sunset, day length and ultraviolet intensity.

Max UV11very high
Sunrise
06:07
Daylight
13 h 39
Sunset
19:46

Radiation · 21.8 MJ/m²

Today in Ontario the mean temperature will be 31.6 °C — +8.2 °C against the normal for 7 August, measured from 1940 to 2026. (1,290 obs.)

Ontario climate — normals and trends