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

61°F

16°C

Humidity 48%
Wind Speed N 0 MPH
Barometer 30.13 in (1020.32 mb)
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Last update 23 Feb 10:20 PM PST
Extended Forecast for

Ontario International Arpt CA

  • Tonight

    Tonight: Mostly clear, with a low around 53. Calm wind becoming northeast around 5 mph.

    Low: 53 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 80. Light and variable wind becoming west 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 80 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 54. West wind around 5 mph becoming calm in the evening.

    Low: 54 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 80. Light and variable wind becoming west 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 80 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 56. Southwest wind around 5 mph becoming calm in the evening.

    Low: 56 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 81.

    High: 81 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 57.

    Low: 57 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 85.

    High: 85 °F

    Mostly Sunny

  • Friday Night

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

    Low: 58 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 53. Calm wind becoming northeast around 5 mph.
Tuesday
Sunny, with a high near 80. Light and variable wind becoming west 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
Tuesday Night
Partly cloudy, with a low around 54. West wind around 5 mph becoming calm in the evening.
Wednesday
Sunny, with a high near 80. Light and variable wind becoming west 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
Wednesday Night
Mostly clear, with a low around 56. Southwest wind around 5 mph becoming calm in the evening.
Thursday
Mostly sunny, with a high near 81.
Thursday Night
Partly cloudy, with a low around 57.
Friday
Mostly sunny, with a high near 85.
Friday Night
Partly cloudy, with a low around 58.
Saturday
Mostly sunny, with a high near 83.
Saturday Night
Partly cloudy, with a low around 56.
Sunday
Mostly sunny, with a high near 79.
Sunday Night
Mostly cloudy, with a low around 54.
Monday
Partly sunny, with a high near 77.
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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:
12:12 pm PST Feb 23, 2026
Forecast Valid:
10pm PST Feb 23, 2026-6pm PST Mar 2, 2026
 
Forecast Discussion
 
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Additional Resources

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