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

73°F

23°C

Humidity 40%
Wind Speed SSW 6 MPH
Barometer 29.89 in (1012.19 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 04 Oct 01:00 PM PDT
Extended Forecast for

Ontario CA

  • This Afternoon

    This Afternoon: Sunny, with a high near 79. West wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 79 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 57. West wind 5 to 10 mph becoming light and variable in the evening.

    Low: 57 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 82. Light and variable wind becoming west 5 to 10 mph in the afternoon.

    High: 82 °F

    Sunny

  • Sunday Night

    Sunday Night: Increasing clouds, with a low around 58. West wind 5 to 10 mph.

    Low: 58 °F

    Increasing
    Clouds

  • Monday

    Monday: Partly sunny, then gradually becoming sunny, with a high near 82. Light west wind increasing to 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 82 °F

    Becoming
    Sunny

  • Monday Night

    Monday Night: Patchy fog after 11pm. Otherwise, increasing clouds, with a low around 58.

    Low: 58 °F

    Patchy Fog

  • Tuesday

    Tuesday: Patchy fog before 11am. Otherwise, cloudy through mid morning, then gradual clearing, with a high near 81.

    High: 81 °F

    Patchy Fog
    then Sunny

  • Tuesday Night

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

    Low: 57 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 82.

    High: 82 °F

    Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 79. West wind 5 to 10 mph, with gusts as high as 20 mph.
Tonight
Mostly clear, with a low around 57. West wind 5 to 10 mph becoming light and variable in the evening.
Sunday
Sunny, with a high near 82. Light and variable wind becoming west 5 to 10 mph in the afternoon.
Sunday Night
Increasing clouds, with a low around 58. West wind 5 to 10 mph.
Monday
Partly sunny, then gradually becoming sunny, with a high near 82. Light west wind increasing to 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
Monday Night
Patchy fog after 11pm. Otherwise, increasing clouds, with a low around 58.
Tuesday
Patchy fog before 11am. Otherwise, cloudy through mid morning, then gradual clearing, with a high near 81.
Tuesday Night
Mostly clear, with a low around 57.
Wednesday
Sunny, with a high near 82.
Wednesday Night
Mostly clear, with a low around 57.
Thursday
Sunny, with a high near 85.
Thursday Night
Mostly clear, with a low around 62.
Friday
Patchy fog. Otherwise, mostly sunny, with a high near 86.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Ontario CA
 34.05°N 117.64°W (Elev. 919 ft)
Last Update:
1:04 pm PDT Oct 4, 2025
Forecast Valid:
1pm PDT Oct 4, 2025-6pm PDT Oct 10, 2025
 
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Additional Resources

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