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.

Clear

81°F

27°C

Humidity 42%
Wind Speed WSW 11 MPH
Barometer 29.99 in (1015.58 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Heat Index81°F (27°C)
Last update 29 Jul 07:35 PM PDT
Extended Forecast for

Ontario International Arpt CA

  • Tonight

    Tonight: Mostly clear, with a low around 63. West wind 5 to 10 mph becoming light and variable after midnight.

    Low: 63 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 92. Light and variable wind becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 92 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 64. West wind 10 to 15 mph becoming light after midnight.

    Low: 64 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 93. Light southwest wind increasing to 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 93 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 63. Southwest wind 5 to 10 mph.

    Low: 63 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 92.

    High: 92 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 63.

    Low: 63 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 92.

    High: 92 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 64.

    Low: 64 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 63. West wind 5 to 10 mph becoming light and variable after midnight.
Wednesday
Sunny, with a high near 92. Light and variable wind becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.
Wednesday Night
Mostly clear, with a low around 64. West wind 10 to 15 mph becoming light after midnight.
Thursday
Sunny, with a high near 93. Light southwest wind increasing to 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
Thursday Night
Mostly clear, with a low around 63. Southwest wind 5 to 10 mph.
Friday
Sunny, with a high near 92.
Friday Night
Mostly clear, with a low around 63.
Saturday
Sunny, with a high near 92.
Saturday Night
Mostly clear, with a low around 64.
Sunday
Sunny, with a high near 91.
Sunday Night
Patchy fog. Otherwise, mostly clear, with a low around 64.
Monday
Patchy fog. Otherwise, sunny, with a high near 90.
Monday Night
Patchy fog. Otherwise, partly cloudy, with a low around 62.
Tuesday
Sunny, with a high near 89.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Ontario International Arpt CA
 34.05°N 117.61°W (Elev. 902 ft)
Last Update:
2:03 am PDT Jul 29, 2025
Forecast Valid:
7pm PDT Jul 29, 2025-6pm PDT Aug 5, 2025
 
Forecast Discussion
 
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Additional Resources

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