National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Ontario International Airport (KONT)

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

Mostly Cloudy

73°F

23°C

Humidity 61%
Wind Speed N 0 MPH
Barometer 30.0 in (1015.92 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 12 Jul 09:53 AM PDT
Extended Forecast for

Ontario International Arpt CA

  • Today

    Today: Mostly sunny, with a high near 92. Light southwest wind becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.

    High: 92 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 66. West wind 5 to 10 mph becoming light southwest after midnight. Winds could gust as high as 20 mph.

    Low: 66 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 93. Light southwest wind becoming west 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 93 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 66. West wind 5 to 10 mph becoming light after midnight. Winds could gust as high as 20 mph.

    Low: 66 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 98. Light southwest wind increasing to 10 to 15 mph in the morning. Winds could gust as high as 20 mph.

    High: 98 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 70.

    Low: 70 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 104.

    High: 104 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 74.

    Low: 74 °F

    Mostly Clear

  • Thursday

    Thursday: A slight chance of showers after 11am. Mostly sunny, with a high near 101.

    High: 101 °F

    Slight Chance
    Showers

Detailed Forecast

Today
Mostly sunny, with a high near 92. Light southwest wind becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.
Tonight
Mostly clear, with a low around 66. West wind 5 to 10 mph becoming light southwest after midnight. Winds could gust as high as 20 mph.
Monday
Mostly sunny, with a high near 93. Light southwest wind becoming west 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
Monday Night
Mostly clear, with a low around 66. West wind 5 to 10 mph becoming light after midnight. Winds could gust as high as 20 mph.
Tuesday
Sunny, with a high near 98. Light southwest wind increasing to 10 to 15 mph in the morning. Winds could gust as high as 20 mph.
Tuesday Night
Mostly clear, with a low around 70.
Wednesday
Sunny, with a high near 104.
Wednesday Night
Mostly clear, with a low around 74.
Thursday
A slight chance of showers after 11am. Mostly sunny, with a high near 101.
Thursday Night
Mostly clear, with a low around 70.
Friday
A slight chance of showers. Mostly sunny, with a high near 94.
Friday Night
A slight chance of showers. Partly cloudy, with a low around 68.
Saturday
Mostly sunny, with a high near 94.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Ontario International Arpt CA
 34.06°N 117.58°W (Elev. 906 ft)
Last Update:
12:12 am PDT Jul 12, 2026
Forecast Valid:
10am PDT Jul 12, 2026-6pm PDT Jul 18, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation