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

75°F

24°C

Humidity 20%
Wind Speed N 0 MPH
Barometer 30.02 in (1016.59 mb)
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Last update 13 Mar 10:20 AM PDT
Extended Forecast for

Ontario CA

Extreme Heat Watch March 16, 10:00am until March 20, 08:00pm
Heat Advisory March 13, 10:37am until March 13, 08:00pm
Click here for hazard details and duration
Extreme Heat Watch
Heat Advisory
  •  
    Heat Advisory March 13, 10:37am until March 13, 08:00pm

    NOW until 8:00pm Fri

    Heat Advisory

  • Today

    High: 92 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 60. West wind 5 to 10 mph becoming light and variable in the evening.

    Low: 60 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 84. Light and variable wind becoming southwest 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 84 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 57. West wind around 5 mph becoming calm after midnight.

    Low: 57 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 90. Calm wind becoming northwest around 5 mph in the morning.

    High: 90 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 63.

    Low: 63 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 93.

    High: 93 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 65.

    Low: 65 °F

    Mostly Clear

Detailed Forecast

Today
Sunny, with a high near 92. Light and variable wind becoming southwest 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
Tonight
Partly cloudy, with a low around 60. West wind 5 to 10 mph becoming light and variable in the evening.
Saturday
Mostly sunny, with a high near 84. Light and variable wind becoming southwest 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
Saturday Night
Clear, with a low around 57. West wind around 5 mph becoming calm after midnight.
Sunday
Sunny, with a high near 90. Calm wind becoming northwest around 5 mph in the morning.
Sunday Night
Mostly clear, with a low around 63.
Monday
Sunny, with a high near 93.
Monday Night
Mostly clear, with a low around 65.
Tuesday
Sunny, with a high near 98.
Tuesday Night
Clear, with a low around 67.
Wednesday
Sunny, with a high near 99.
Wednesday Night
Clear, with a low around 66.
Thursday
Sunny, with a high near 100.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Ontario CA
 34.05°N 117.61°W (Elev. 902 ft)
Last Update:
12:24 am PDT Mar 13, 2026
Forecast Valid:
10am PDT Mar 13, 2026-6pm PDT Mar 19, 2026
 
Forecast Discussion
 
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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation