Current conditions at

Ontario International Airport (KONT)

Lat: 34.05316°NLon: 117.57685°WElev: 906.0ft.

Partly Cloudy

66°F

19°C

Humidity 68%
Wind Speed SW 12 MPH
Barometer 30.02 in (1016.59 mb)
Dewpoint 55°F (13°C)
Visibility 8.00 mi
Last update 12 May 11:05 AM PDT
Extended Forecast for

Ontario International Arpt CA

  • Today

    Today: Sunny, with a high near 82. West wind around 15 mph, with gusts as high as 30 mph.

    High: 82 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 58. West wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 58 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Cloudy through mid morning, then gradual clearing, with a high near 79. Southwest wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.

    High: 79 °F

    Becoming
    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 57. West wind 10 to 15 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 20 mph.

    Low: 57 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 82. Light southwest wind becoming west 10 to 15 mph in the morning. Winds could gust as high as 25 mph.

    High: 82 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 57.

    Low: 57 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 82.

    High: 82 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 57.

    Low: 57 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 81.

    High: 81 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 82. West wind around 15 mph, with gusts as high as 30 mph.
Tonight
Increasing clouds, with a low around 58. West wind 5 to 15 mph, with gusts as high as 20 mph.
Wednesday
Cloudy through mid morning, then gradual clearing, with a high near 79. Southwest wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.
Wednesday Night
Mostly clear, with a low around 57. West wind 10 to 15 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 20 mph.
Thursday
Sunny, with a high near 82. Light southwest wind becoming west 10 to 15 mph in the morning. Winds could gust as high as 25 mph.
Thursday Night
Clear, with a low around 57.
Friday
Sunny, with a high near 82.
Friday Night
Mostly clear, with a low around 57.
Saturday
Sunny, with a high near 81.
Saturday Night
Mostly clear, with a low around 57.
Sunday
Sunny, with a high near 82.
Sunday Night
Mostly clear, with a low around 58.
Monday
Sunny, with a high near 86.
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ABOUT THIS FORECAST

 
Point Forecast:
Ontario International Arpt CA
 34.06°N 117.58°W (Elev. 906 ft)
12:40 am PDT May 12, 2026
11am PDT May 12, 2026-6pm PDT May 18, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database