Current conditions at

Ontario International Airport (KONT)

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

Clear

45°F

7°C

Humidity 65%
Wind Speed N 0 MPH
Barometer 30.17 in (1021.67 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Last update 21 Feb 08:05 AM PST
Extended Forecast for

Ontario CA

  • Today

    Today: Sunny, with a high near 68. Calm wind becoming east around 5 mph in the afternoon.

    High: 68 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 45. South wind around 5 mph becoming calm.

    Low: 45 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 75. Northeast wind around 5 mph becoming calm.

    High: 75 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 49. Northwest wind around 5 mph becoming calm.

    Low: 49 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 80. Northeast wind around 5 mph becoming calm.

    High: 80 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 53.

    Low: 53 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 78.

    High: 78 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 55.

    Low: 55 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 78.

    High: 78 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 68. Calm wind becoming east around 5 mph in the afternoon.
Tonight
Partly cloudy, with a low around 45. South wind around 5 mph becoming calm.
Sunday
Sunny, with a high near 75. Northeast wind around 5 mph becoming calm.
Sunday Night
Partly cloudy, with a low around 49. Northwest wind around 5 mph becoming calm.
Monday
Mostly sunny, with a high near 80. Northeast wind around 5 mph becoming calm.
Monday Night
Partly cloudy, with a low around 53.
Tuesday
Mostly sunny, with a high near 78.
Tuesday Night
Partly cloudy, with a low around 55.
Wednesday
Mostly sunny, with a high near 78.
Wednesday Night
Partly cloudy, with a low around 56.
Thursday
Mostly sunny, with a high near 82.
Thursday Night
Partly cloudy, with a low around 57.
Friday
Mostly sunny, with a high near 85.
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ABOUT THIS FORECAST

 
Point Forecast:
Ontario CA
 34.03°N 117.61°W (Elev. 823 ft)
1:27 am PST Feb 21, 2026
8am PST Feb 21, 2026-6pm PST Feb 27, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database