Current conditions at

Ontario International Airport (KONT)

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

Mist

61°F

16°C

Humidity 87%
Wind Speed S 3 MPH
Barometer 29.99 in (1015.58 mb)
Dewpoint 57°F (14°C)
Visibility 6.00 mi
Last update 25 Mar 04:05 AM PDT
Extended Forecast for

Ontario CA

  • Today

    Today: Patchy fog before 8am.  Otherwise, sunny, with a high near 87. Light and variable wind becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 87 °F

    Patchy Fog
    then Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 59. West wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 59 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 89. Light and variable wind becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 89 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 60. West wind 10 to 15 mph becoming light and variable  in the evening. Winds could gust as high as 20 mph.

    Low: 60 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 91. Light and variable wind becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 91 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 62.

    Low: 62 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 91.

    High: 91 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 62.

    Low: 62 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 90.

    High: 90 °F

    Sunny

Detailed Forecast

Today
Patchy fog before 8am. Otherwise, sunny, with a high near 87. Light and variable wind becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.
Tonight
Mostly clear, with a low around 59. West wind 5 to 10 mph, with gusts as high as 20 mph.
Thursday
Sunny, with a high near 89. Light and variable wind becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.
Thursday Night
Mostly clear, with a low around 60. West wind 10 to 15 mph becoming light and variable in the evening. Winds could gust as high as 20 mph.
Friday
Mostly sunny, with a high near 91. Light and variable wind becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.
Friday Night
Partly cloudy, with a low around 62.
Saturday
Partly sunny, with a high near 91.
Saturday Night
Partly cloudy, with a low around 62.
Sunday
Sunny, with a high near 90.
Sunday Night
Partly cloudy, with a low around 61.
Monday
Partly sunny, with a high near 82.
Monday Night
Mostly cloudy, with a low around 58.
Tuesday
A slight chance of showers. Partly sunny, with a high near 72.
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ABOUT THIS FORECAST

 
Point Forecast:
Ontario CA
 34.05°N 117.64°W (Elev. 919 ft)
1:18 am PDT Mar 25, 2026
4am PDT Mar 25, 2026-6pm PDT Mar 31, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database