National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Ontario International Airport (KONT)

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

Clear

91°F

33°C

Humidity 27%
Wind Speed WSW 16 MPH
Barometer 29.76 in (1007.79 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Heat Index88°F (31°C)
Last update 18 Jun 05:20 PM PDT
Extended Forecast for

Ontario International Arpt CA

Heat Advisory June 18, 05:45pm until June 18, 08:00pm
Click here for hazard details and duration
...
  •  
    Heat Advisory June 18, 05:45pm until June 18, 08:00pm

    NOW until 8:00pm Wed

    Heat Advisory

  • Tonight

    Low: 64 °F

    Clear

  • Juneteenth

    Juneteenth: Sunny, with a high near 93. West wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.

    High: 93 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 62. West wind 5 to 15 mph, with gusts as high as 25 mph.

    Low: 62 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 86. Light southwest wind increasing to 10 to 15 mph in the morning. Winds could gust as high as 20 mph.

    High: 86 °F

    Sunny

  • Friday Night

    Friday Night: Increasing clouds, with a low around 59. Southwest wind 10 to 15 mph becoming light after midnight. Winds could gust as high as 20 mph.

    Low: 59 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Patchy fog before 11am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 81.

    High: 81 °F

    Patchy Fog
    then Sunny

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 57.

    Low: 57 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Patchy fog before 11am. Otherwise, mostly cloudy through mid morning, then gradual clearing, with a high near 84.

    High: 84 °F

    Patchy Fog
    then Sunny

Detailed Forecast

Tonight
Clear, with a low around 64. West wind 10 to 15 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 25 mph.
Juneteenth
Sunny, with a high near 93. West wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.
Thursday Night
Clear, with a low around 62. West wind 5 to 15 mph, with gusts as high as 25 mph.
Friday
Sunny, with a high near 86. Light southwest wind increasing to 10 to 15 mph in the morning. Winds could gust as high as 20 mph.
Friday Night
Increasing clouds, with a low around 59. Southwest wind 10 to 15 mph becoming light after midnight. Winds could gust as high as 20 mph.
Saturday
Patchy fog before 11am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 81.
Saturday Night
Increasing clouds, with a low around 57.
Sunday
Patchy fog before 11am. Otherwise, mostly cloudy through mid morning, then gradual clearing, with a high near 84.
Sunday Night
Mostly clear, with a low around 59.
Monday
Sunny, with a high near 86.
Monday Night
Mostly clear, with a low around 59.
Tuesday
Sunny, with a high near 85.
Tuesday Night
Mostly clear, with a low around 60.
Wednesday
Sunny, with a high near 89.
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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:
12:57 pm PDT Jun 18, 2025
Forecast Valid:
5pm PDT Jun 18, 2025-6pm PDT Jun 25, 2025
 
Forecast Discussion
 
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