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

55°F

13°C

Humidity 71%
Wind Speed N 0 MPH
Barometer 30.03 in (1016.93 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 29 Apr 04:20 AM PDT
Extended Forecast for

Ontario International Arpt CA

  • Today

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

    High: 78 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 54. West wind 10 to 15 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 20 mph.

    Low: 54 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 78. Southwest wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.

    High: 78 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 55. Southwest wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 55 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 82. Light west wind increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 82 °F

    Sunny

  • Friday Night

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

    Low: 57 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 85.

    High: 85 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 58.

    Low: 58 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 79.

    High: 79 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 78. Light west wind becoming southwest 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.
Tonight
Mostly clear, with a low around 54. West wind 10 to 15 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 20 mph.
Thursday
Sunny, with a high near 78. Southwest wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.
Thursday Night
Mostly clear, with a low around 55. Southwest wind 5 to 15 mph, with gusts as high as 20 mph.
Friday
Sunny, with a high near 82. Light west wind increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.
Friday Night
Mostly clear, with a low around 57.
Saturday
Sunny, with a high near 85.
Saturday Night
Partly cloudy, with a low around 58.
Sunday
Mostly sunny, with a high near 79.
Sunday Night
Partly cloudy, with a low around 55.
Monday
Mostly sunny, with a high near 73.
Monday Night
Partly cloudy, with a low around 53.
Tuesday
Mostly sunny, with a high near 72.
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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:
12:05 am PDT Apr 29, 2026
Forecast Valid:
4am PDT Apr 29, 2026-6pm PDT May 5, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation