Current conditions at

Ontario International Airport (KONT)

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

Overcast

56°F

13°C

Humidity 77%
Wind Speed N 0 MPH
Barometer 29.91 in (1012.87 mb)
Dewpoint 49°F (9°C)
Visibility 10.00 mi
Last update 16 Apr 03:53 AM PDT
Extended Forecast for

Ontario CA

  • Today

    Today: Patchy fog before 11am.  Otherwise, partly sunny, with a high near 74. Light west wind becoming southwest 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 74 °F

    Patchy Fog
    then Mostly
    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 53. Southwest wind 10 to 15 mph becoming light west  after midnight. Winds could gust as high as 20 mph.

    Low: 53 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 79. Calm wind becoming west around 5 mph in the afternoon.

    High: 79 °F

    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 55. West wind 5 to 10 mph becoming light and variable  in the evening.

    Low: 55 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 83. Light and variable wind becoming southwest 5 to 10 mph in the afternoon.

    High: 83 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 56.

    Low: 56 °F

    Partly Cloudy

  • Sunday

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

    High: 82 °F

    Patchy Fog
    then Mostly
    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 53.

    Low: 53 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 77.

    High: 77 °F

    Sunny

Detailed Forecast

Today
Patchy fog before 11am. Otherwise, partly sunny, with a high near 74. Light west wind becoming southwest 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.
Tonight
Mostly clear, with a low around 53. Southwest wind 10 to 15 mph becoming light west after midnight. Winds could gust as high as 20 mph.
Friday
Sunny, with a high near 79. Calm wind becoming west around 5 mph in the afternoon.
Friday Night
Clear, with a low around 55. West wind 5 to 10 mph becoming light and variable in the evening.
Saturday
Sunny, with a high near 83. Light and variable wind becoming southwest 5 to 10 mph in the afternoon.
Saturday Night
Partly cloudy, with a low around 56.
Sunday
Patchy fog before 11am. Otherwise, mostly sunny, with a high near 82.
Sunday Night
Mostly clear, with a low around 53.
Monday
Sunny, with a high near 77.
Monday Night
Mostly clear, with a low around 53.
Tuesday
Mostly sunny, with a high near 72.
Tuesday Night
Partly cloudy, with a low around 51.
Wednesday
Mostly sunny, with a high near 73.
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ABOUT THIS FORECAST

 
Point Forecast:
Ontario CA
 34.05°N 117.61°W (Elev. 902 ft)
12:20 am PDT Apr 16, 2026
4am PDT Apr 16, 2026-6pm PDT Apr 22, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database