Current conditions at

Ontario International Airport (KONT)

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

Overcast

46°F

8°C

Humidity 79%
Wind Speed S 4 MPH
Barometer 30.02 in (1016.59 mb)
Dewpoint 40°F (4°C)
Visibility 10.00 mi
Wind Chill44°F (7°C)
Last update 20 Feb 08:53 AM PST
Extended Forecast for

Ontario CA

  • Today

    Today: Patchy dense fog before 10am.  Otherwise, sunny, with a high near 58. East wind around 5 mph becoming calm.

    High: 58 °F

    Patchy Dense
    Fog then
    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 39. Southwest wind around 5 mph becoming northeast after midnight.

    Low: 39 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 67. Calm wind becoming east around 5 mph in the afternoon.

    High: 67 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 47. West wind around 5 mph becoming calm.

    Low: 47 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 75. Calm wind becoming southwest around 5 mph.

    High: 75 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 50.

    Low: 50 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 79.

    High: 79 °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

Detailed Forecast

Today
Patchy dense fog before 10am. Otherwise, sunny, with a high near 58. East wind around 5 mph becoming calm.
Tonight
Mostly clear, with a low around 39. Southwest wind around 5 mph becoming northeast after midnight.
Saturday
Sunny, with a high near 67. Calm wind becoming east around 5 mph in the afternoon.
Saturday Night
Partly cloudy, with a low around 47. West wind around 5 mph becoming calm.
Sunday
Sunny, with a high near 75. Calm wind becoming southwest around 5 mph.
Sunday Night
Mostly clear, with a low around 50.
Monday
Mostly sunny, with a high near 79.
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 54.
Wednesday
Mostly sunny, with a high near 77.
Wednesday Night
Partly cloudy, with a low around 55.
Thursday
Mostly sunny, with a high near 80.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
Ontario CA
 34.03°N 117.61°W (Elev. 823 ft)
2:50 am PST Feb 20, 2026
9am PST Feb 20, 2026-6pm PST Feb 26, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database