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

82°F

28°C

Humidity 24%
Wind Speed WSW 11 MPH
Barometer 29.86 in (1011.18 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 19 Apr 04:20 PM PDT
Extended Forecast for

Ontario International Arpt CA

  • Tonight

    Tonight: Mostly clear, with a low around 54. West wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 54 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 78. Light southwest wind becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 78 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 52. West wind 10 to 15 mph becoming light after midnight. Winds could gust as high as 20 mph.

    Low: 52 °F

    Mostly Clear

  • Tuesday

    Tuesday: A slight chance of showers after 11am. Partly sunny, with a high near 73. Light southwest wind increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 20%.

    High: 73 °F

    Slight Chance
    Showers

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 52. West wind 5 to 15 mph, with gusts as high as 25 mph.

    Low: 52 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 69.

    High: 69 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 50.

    Low: 50 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 76.

    High: 76 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 54.

    Low: 54 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 54. West wind 5 to 15 mph, with gusts as high as 20 mph.
Monday
Sunny, with a high near 78. Light southwest wind becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.
Monday Night
Mostly clear, with a low around 52. West wind 10 to 15 mph becoming light after midnight. Winds could gust as high as 20 mph.
Tuesday
A slight chance of showers after 11am. Partly sunny, with a high near 73. Light southwest wind increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 20%.
Tuesday Night
Mostly cloudy, with a low around 52. West wind 5 to 15 mph, with gusts as high as 25 mph.
Wednesday
Mostly sunny, with a high near 69.
Wednesday Night
Mostly clear, with a low around 50.
Thursday
Sunny, with a high near 76.
Thursday Night
Partly cloudy, with a low around 54.
Friday
Mostly sunny, with a high near 75.
Friday Night
Partly cloudy, with a low around 54.
Saturday
Partly sunny, with a high near 73.
Saturday Night
Partly cloudy, with a low around 54.
Sunday
Mostly sunny, with a high near 71.
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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:
11:27 am PDT Apr 19, 2026
Forecast Valid:
4pm PDT Apr 19, 2026-6pm PDT Apr 26, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation