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

84°F

29°C

Humidity 37%
Wind Speed W 13 MPH
Barometer 29.8 in (1009.14 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 19 Jun 05:00 PM PDT
Extended Forecast for

Ontario International Arpt CA

  • Tonight

    Tonight: Patchy fog after 2am. Otherwise, increasing clouds, with a low around 61. West wind 10 to 15 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 20 mph.

    Low: 61 °F

    Clear then
    Patchy Fog

  • Friday

    Friday: Patchy fog before 11am. Otherwise, mostly cloudy through mid morning, then gradual clearing, with a high near 83. West wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.

    High: 83 °F

    Patchy Fog
    then Sunny

  • Friday Night

    Friday Night: Increasing clouds, with a low around 59. West wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 59 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Patchy fog before 11am. Otherwise, mostly cloudy through mid morning, then gradual clearing, with a high near 78. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 78 °F

    Patchy Fog
    then Sunny

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 57. Southwest wind 5 to 10 mph becoming north after midnight. Winds could gust as high as 20 mph.

    Low: 57 °F

    Increasing
    Clouds

  • Sunday

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

    High: 81 °F

    Patchy Fog
    then Sunny

  • Sunday Night

    Sunday Night: Increasing clouds, with a low around 58.

    Low: 58 °F

    Increasing
    Clouds

  • Monday

    Monday: Mostly cloudy through mid morning, then gradual clearing, with a high near 83.

    High: 83 °F

    Becoming
    Sunny

  • Monday Night

    Monday Night: Increasing clouds, with a low around 57.

    Low: 57 °F

    Increasing
    Clouds

Detailed Forecast

Tonight
Patchy fog after 2am. Otherwise, increasing clouds, with a low around 61. West wind 10 to 15 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 20 mph.
Friday
Patchy fog before 11am. Otherwise, mostly cloudy through mid morning, then gradual clearing, with a high near 83. West wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.
Friday Night
Increasing clouds, with a low around 59. West wind 5 to 15 mph, with gusts as high as 20 mph.
Saturday
Patchy fog before 11am. Otherwise, mostly cloudy through mid morning, then gradual clearing, with a high near 78. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Saturday Night
Increasing clouds, with a low around 57. Southwest wind 5 to 10 mph becoming north after midnight. Winds could gust as high as 20 mph.
Sunday
Patchy fog before 11am. Otherwise, mostly cloudy through mid morning, then gradual clearing, with a high near 81.
Sunday Night
Increasing clouds, with a low around 58.
Monday
Mostly cloudy through mid morning, then gradual clearing, with a high near 83.
Monday Night
Increasing clouds, with a low around 57.
Tuesday
Mostly cloudy through mid morning, then gradual clearing, with a high near 82.
Tuesday Night
Mostly clear, with a low around 58.
Wednesday
Sunny, with a high near 85.
Wednesday Night
Mostly clear, with a low around 61.
Thursday
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
 34.07°N 117.62°W (Elev. 1017 ft)
Last Update:
1:27 pm PDT Jun 19, 2025
Forecast Valid:
5pm PDT Jun 19, 2025-6pm PDT Jun 26, 2025
 
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