Current conditions at

Ontario International Airport (KONT)

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

Partly Cloudy

59°F

15°C

Humidity 77%
Wind Speed N 0 MPH
Barometer 29.92 in (1013.21 mb)
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 30 Apr 08:35 AM PDT
Extended Forecast for

Ontario CA

  • Today

    Today: Sunny, with a high near 77. Southwest wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.

    High: 77 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 54. West wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 54 °F

    Mostly Clear

  • Friday

    Friday: Patchy fog before 11am.  Otherwise, sunny, with a high near 81. Light west wind increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.

    High: 81 °F

    Patchy Fog
    then Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 56. West wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 56 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 83. Light west wind increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 83 °F

    Sunny

  • Saturday Night

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

    Low: 56 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 76.

    High: 76 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 54.

    Low: 54 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 69.

    High: 69 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 77. Southwest wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.
Tonight
Mostly clear, with a low around 54. West wind 5 to 10 mph, with gusts as high as 20 mph.
Friday
Patchy fog before 11am. Otherwise, sunny, with a high near 81. Light west wind increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.
Friday Night
Mostly clear, with a low around 56. West wind 5 to 15 mph, with gusts as high as 20 mph.
Saturday
Sunny, with a high near 83. Light west wind increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.
Saturday Night
Partly cloudy, with a low around 56.
Sunday
Mostly sunny, with a high near 76.
Sunday Night
Partly cloudy, with a low around 54.
Monday
Mostly sunny, with a high near 69.
Monday Night
Partly cloudy, with a low around 53.
Tuesday
Mostly sunny, with a high near 71.
Tuesday Night
Partly cloudy, with a low around 53.
Wednesday
Sunny, with a high near 79.
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ABOUT THIS FORECAST

 
Point Forecast:
Ontario CA
 34.03°N 117.61°W (Elev. 823 ft)
12:23 am PDT Apr 30, 2026
8am PDT Apr 30, 2026-6pm PDT May 6, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database