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

72°F

22°C

Humidity 40%
Wind Speed WSW 10 MPH
Barometer 29.96 in (1014.56 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 01 Apr 02:20 PM PDT
Extended Forecast for

Ontario International Arpt CA

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 71. Southwest wind around 15 mph, with gusts as high as 25 mph.

    High: 71 °F

    Mostly Sunny

  • Tonight

    Tonight: Patchy fog after 8pm. Otherwise, mostly cloudy, with a low around 54. Southwest wind 10 to 15 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 20 mph.

    Low: 54 °F

    Patchy Fog

  • Thursday

    Thursday: Patchy fog before 11am. Otherwise, partly sunny, with a high near 70. Light southwest wind increasing to 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 70 °F

    Patchy Fog
    then Mostly
    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 54. Southwest wind 5 to 10 mph becoming light west in the evening.

    Low: 54 °F

    Partly Cloudy

  • Friday

    Friday: Increasing clouds, with a high near 78. Breezy, with a northwest wind 5 to 10 mph becoming northeast 15 to 25 mph in the afternoon. Winds could gust as high as 35 mph.

    High: 78 °F

    Sunny then
    Partly Sunny
    and Breezy

  • Friday Night

    Friday Night: Partly cloudy, with a low around 55.

    Low: 55 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 84.

    High: 84 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 55.

    Low: 55 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 84.

    High: 84 °F

    Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 71. Southwest wind around 15 mph, with gusts as high as 25 mph.
Tonight
Patchy fog after 8pm. Otherwise, mostly cloudy, with a low around 54. Southwest wind 10 to 15 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 20 mph.
Thursday
Patchy fog before 11am. Otherwise, partly sunny, with a high near 70. Light southwest wind increasing to 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
Thursday Night
Partly cloudy, with a low around 54. Southwest wind 5 to 10 mph becoming light west in the evening.
Friday
Increasing clouds, with a high near 78. Breezy, with a northwest wind 5 to 10 mph becoming northeast 15 to 25 mph in the afternoon. Winds could gust as high as 35 mph.
Friday Night
Partly cloudy, with a low around 55.
Saturday
Mostly sunny, with a high near 84.
Saturday Night
Mostly clear, with a low around 55.
Sunday
Sunny, with a high near 84.
Sunday Night
Mostly clear, with a low around 55.
Monday
Partly sunny, with a high near 81.
Monday Night
Mostly clear, with a low around 55.
Tuesday
Sunny, with a high near 80.
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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:
12:19 pm PDT Apr 1, 2026
Forecast Valid:
2pm PDT Apr 1, 2026-6pm PDT Apr 7, 2026
 
Forecast Discussion
 
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Additional Resources

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