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

81°F

27°C

Humidity 34%
Wind Speed WNW 6 MPH
Barometer 30.19 in (1022.35 mb)
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 11 Mar 03:35 PM PDT
Extended Forecast for

Ontario International Arpt CA

Heat Advisory March 12, 10:00am until March 13, 08:00pm
Click here for hazard details and duration
Heat Advisory

  • Tonight

    Tonight: Mostly clear, with a low around 59. West wind 5 to 10 mph becoming light and variable in the evening.

    Low: 59 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 93. Calm wind.

    High: 93 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 62. West wind around 5 mph becoming calm in the evening.

    Low: 62 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 93. Light and variable wind becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.

    High: 93 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 62. West wind 5 to 10 mph becoming light and variable. Winds could gust as high as 20 mph.

    Low: 62 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 89.

    High: 89 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 59.

    Low: 59 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 91.

    High: 91 °F

    Mostly Sunny

  • Sunday Night

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

    Low: 61 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 59. West wind 5 to 10 mph becoming light and variable in the evening.
Thursday
Sunny, with a high near 93. Calm wind.
Thursday Night
Mostly clear, with a low around 62. West wind around 5 mph becoming calm in the evening.
Friday
Mostly sunny, with a high near 93. Light and variable wind becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.
Friday Night
Mostly cloudy, with a low around 62. West wind 5 to 10 mph becoming light and variable. Winds could gust as high as 20 mph.
Saturday
Partly sunny, with a high near 89.
Saturday Night
Mostly clear, with a low around 59.
Sunday
Mostly sunny, with a high near 91.
Sunday Night
Mostly clear, with a low around 61.
Monday
Sunny, with a high near 94.
Monday Night
Mostly clear, with a low around 63.
Tuesday
Sunny, with a high near 95.
Tuesday Night
Clear, with a low around 65.
Wednesday
Sunny, with a high near 94.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Ontario International Arpt CA
 34.07°N 117.62°W (Elev. 1017 ft)
Last Update:
11:34 am PDT Mar 11, 2026
Forecast Valid:
4pm PDT Mar 11, 2026-6pm PDT Mar 18, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation