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

70°F

21°C

Humidity 32%
Wind Speed N 0 MPH
Barometer 30.05 in (1017.61 mb)
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Last update 12 Mar 11:20 PM PDT
Extended Forecast for

Ontario International Arpt CA

Heat Advisory March 12, 11:34pm until March 13, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory March 12, 11:34pm until March 13, 08:00pm

    NOW until 8:00pm Fri

    Heat Advisory

  • Tonight

    Low: 60 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 92. Light and variable wind becoming southwest 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 92 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 59. West wind 5 to 10 mph becoming light and variable in the evening.

    Low: 59 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 83. Light and variable wind becoming southwest 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 83 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 56. West wind 5 to 10 mph becoming light after midnight.

    Low: 56 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 90.

    High: 90 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 61.

    Low: 61 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 93.

    High: 93 °F

    Sunny

Detailed Forecast

Tonight
Clear, with a low around 60. North wind around 5 mph becoming calm.
Friday
Sunny, with a high near 92. Light and variable wind becoming southwest 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
Friday Night
Partly cloudy, with a low around 59. West wind 5 to 10 mph becoming light and variable in the evening.
Saturday
Mostly sunny, with a high near 83. Light and variable wind becoming southwest 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.
Saturday Night
Clear, with a low around 56. West wind 5 to 10 mph becoming light after midnight.
Sunday
Sunny, with a high near 90.
Sunday Night
Mostly clear, with a low around 61.
Monday
Sunny, with a high near 93.
Monday Night
Mostly clear, with a low around 64.
Tuesday
Sunny, with a high near 97.
Tuesday Night
Clear, with a low around 66.
Wednesday
Sunny, with a high near 98.
Wednesday Night
Clear, with a low around 66.
Thursday
Sunny, with a high near 98.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Ontario International Arpt CA
 34.06°N 117.58°W (Elev. 906 ft)
Last Update:
11:24 pm PDT Mar 12, 2026
Forecast Valid:
11pm PDT Mar 12, 2026-6pm PDT Mar 19, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation