National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Ontario International Airport (KONT)

Lat: 34.05316°NLon: 117.57685°WElev: 906.0ft.

Clear

63°F

17°C

Humidity 53%
Wind Speed WSW 4 MPH
Barometer 29.87 in (1011.51 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 21 May 03:53 AM PDT
Extended Forecast for

Ontario International Arpt CA

  • Today

    Today: Sunny, with a high near 86. West wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.

    High: 86 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 59. Southwest wind 5 to 15 mph, with gusts as high as 25 mph.

    Low: 59 °F

    Clear

  • Friday

    Friday: Sunny, 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

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 57. West wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 57 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 82. Southwest wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.

    High: 82 °F

    Sunny

  • Saturday Night

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

    Low: 57 °F

    Mostly Clear

  • Sunday

    Sunday: Patchy fog before 11am. Otherwise, sunny, with a high near 82.

    High: 82 °F

    Patchy Fog
    then Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 56.

    Low: 56 °F

    Mostly Clear

  • Memorial Day

    Memorial Day: Sunny, with a high near 77.

    High: 77 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 86. West wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.
Tonight
Clear, with a low around 59. Southwest wind 5 to 15 mph, with gusts as high as 25 mph.
Friday
Sunny, 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
Mostly clear, with a low around 57. West wind 5 to 15 mph, with gusts as high as 20 mph.
Saturday
Sunny, with a high near 82. Southwest wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.
Saturday Night
Mostly clear, with a low around 57.
Sunday
Patchy fog before 11am. Otherwise, sunny, with a high near 82.
Sunday Night
Mostly clear, with a low around 56.
Memorial Day
Sunny, with a high near 77.
Monday Night
Mostly clear, with a low around 55.
Tuesday
Mostly sunny, with a high near 71.
Tuesday Night
Partly cloudy, with a low around 53.
Wednesday
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
 34.08°N 117.59°W (Elev. 1037 ft)
Last Update:
1:59 am PDT May 21, 2026
Forecast Valid:
4am PDT May 21, 2026-6pm PDT May 27, 2026
 
Forecast Discussion
 
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