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.

Mist

57°F

14°C

Humidity 93%
Wind Speed NW 3 MPH
Barometer 29.93 in (1013.55 mb)
Dewpoint 55°F (13°C)
Visibility 6.00 mi
Last update 10 Apr 06:05 AM PDT
Extended Forecast for

Ontario International Arpt CA

  • Today

    Today: Patchy fog before 11am. Otherwise, mostly sunny, with a high near 75. Light west wind becoming southwest 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.

    High: 75 °F

    Patchy Fog
    then Sunny

  • Tonight

    Tonight: A slight chance of showers after 11pm. Mostly cloudy, with a low around 56. West wind 5 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.

    Low: 56 °F

    Slight Chance
    Showers

  • Saturday

    Saturday: Mostly sunny, with a high near 70. Southwest wind 5 to 15 mph, with gusts as high as 25 mph.

    High: 70 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A chance of showers after 11pm. Increasing clouds, with a low around 54. Southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 50%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 54 °F

    Chance
    Showers

  • Sunday

    Sunday: Showers, with thunderstorms also possible after 11am. High near 64. West wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    High: 64 °F

    Showers then
    Chance
    Showers

  • Sunday Night

    Sunday Night: A chance of showers. Mostly cloudy, with a low around 49. Chance of precipitation is 40%.

    Low: 49 °F

    Chance
    Showers

  • Monday

    Monday: A slight chance of showers before 11am. Mostly sunny, with a high near 65. Chance of precipitation is 20%.

    High: 65 °F

    Slight Chance
    Showers then
    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 50.

    Low: 50 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 72.

    High: 72 °F

    Sunny

Detailed Forecast

Today
Patchy fog before 11am. Otherwise, mostly sunny, with a high near 75. Light west wind becoming southwest 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.
Tonight
A slight chance of showers after 11pm. Mostly cloudy, with a low around 56. West wind 5 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Saturday
Mostly sunny, with a high near 70. Southwest wind 5 to 15 mph, with gusts as high as 25 mph.
Saturday Night
A chance of showers after 11pm. Increasing clouds, with a low around 54. Southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 50%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday
Showers, with thunderstorms also possible after 11am. High near 64. West wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 49. Chance of precipitation is 40%.
Monday
A slight chance of showers before 11am. Mostly sunny, with a high near 65. Chance of precipitation is 20%.
Monday Night
Partly cloudy, with a low around 50.
Tuesday
Sunny, with a high near 72.
Tuesday Night
Clear, with a low around 51.
Wednesday
Sunny, with a high near 77.
Wednesday Night
Partly cloudy, with a low around 53.
Thursday
Mostly sunny, with a high near 76.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Ontario International Arpt CA
 34.05°N 117.61°W (Elev. 902 ft)
Last Update:
3:21 am PDT Apr 10, 2026
Forecast Valid:
6am PDT Apr 10, 2026-6pm PDT Apr 16, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation