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

63°F

17°C

Humidity 93%
Wind Speed W 6 MPH
Barometer 29.82 in (1009.82 mb)
Dewpoint 61°F (16°C)
Visibility 8.00 mi
Last update 19 Jun 04:35 AM PDT
Extended Forecast for

Ontario CA

  • Juneteenth

    Juneteenth: Patchy fog before 8am. Otherwise, sunny, with a high near 89. West wind 5 to 15 mph, with gusts as high as 25 mph.

    High: 89 °F

    Patchy Fog
    then Sunny

  • Tonight

    Tonight: Patchy fog after 2am. Otherwise, increasing clouds, with a low around 61. West wind 10 to 15 mph becoming light after midnight. Winds could gust as high as 20 mph.

    Low: 61 °F

    Clear then
    Patchy Fog

  • Friday

    Friday: Patchy fog before 11am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 85. West wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.

    High: 85 °F

    Patchy Fog
    then Sunny

  • Friday Night

    Friday Night: Increasing clouds, with a low around 59. West wind 10 to 15 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 25 mph.

    Low: 59 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Patchy fog before 11am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 80. Light and variable wind becoming southwest 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.

    High: 80 °F

    Patchy Fog
    then Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 57.

    Low: 57 °F

    Mostly Clear

  • Sunday

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

    High: 82 °F

    Patchy Fog
    then Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 58.

    Low: 58 °F

    Mostly Clear

  • Monday

    Monday: Patchy fog before 11am. Otherwise, sunny, with a high near 85.

    High: 85 °F

    Patchy Fog
    then Sunny

Detailed Forecast

Juneteenth
Patchy fog before 8am. Otherwise, sunny, with a high near 89. West wind 5 to 15 mph, with gusts as high as 25 mph.
Tonight
Patchy fog after 2am. Otherwise, increasing clouds, with a low around 61. West wind 10 to 15 mph becoming light after midnight. Winds could gust as high as 20 mph.
Friday
Patchy fog before 11am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 85. West wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.
Friday Night
Increasing clouds, with a low around 59. West wind 10 to 15 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 25 mph.
Saturday
Patchy fog before 11am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 80. Light and variable wind becoming southwest 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.
Saturday Night
Mostly clear, with a low around 57.
Sunday
Patchy fog before 11am. Otherwise, sunny, with a high near 82.
Sunday Night
Mostly clear, with a low around 58.
Monday
Patchy fog before 11am. Otherwise, sunny, with a high near 85.
Monday Night
Mostly clear, with a low around 58.
Tuesday
Sunny, with a high near 84.
Tuesday Night
Mostly clear, with a low around 59.
Wednesday
Patchy fog. Otherwise, sunny, with a high near 88.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Ontario CA
 34.03°N 117.58°W (Elev. 853 ft)
Last Update:
2:02 am PDT Jun 19, 2025
Forecast Valid:
4am PDT Jun 19, 2025-6pm PDT Jun 25, 2025
 
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