Current conditions at

Ontario International Airport (KONT)

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

Clear

70°F

21°C

Humidity 64%
Wind Speed N 0 MPH
Barometer 29.97 in (1014.9 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 20 Aug 07:00 AM PDT
Extended Forecast for

Ontario CA

Heat Advisory August 20, 10:00am until August 23, 08:00pm
Click here for hazard details and duration
Heat Advisory
  • Today

    Today: Sunny, with a high near 96. Light and variable wind becoming west 5 to 10 mph in the afternoon.

    High: 96 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 71. West wind 5 to 10 mph becoming light and variable  after midnight.

    Low: 71 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 101. Light and variable wind becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 101 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 73. West wind 10 to 15 mph becoming light  after midnight.

    Low: 73 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 100. Light southwest wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 20 mph.

    High: 100 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 73.

    Low: 73 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 98.

    High: 98 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 73.

    Low: 73 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 97.

    High: 97 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 96. Light and variable wind becoming west 5 to 10 mph in the afternoon.
Tonight
Partly cloudy, with a low around 71. West wind 5 to 10 mph becoming light and variable after midnight.
Thursday
Sunny, with a high near 101. Light and variable wind becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.
Thursday Night
Mostly clear, with a low around 73. West wind 10 to 15 mph becoming light after midnight.
Friday
Sunny, with a high near 100. Light southwest wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 20 mph.
Friday Night
Mostly clear, with a low around 73.
Saturday
Mostly sunny, with a high near 98.
Saturday Night
Mostly clear, with a low around 73.
Sunday
Sunny, with a high near 97.
Sunday Night
Mostly clear, with a low around 72.
Monday
Sunny, with a high near 94.
Monday Night
Mostly clear, with a low around 68.
Tuesday
Sunny, with a high near 91.
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ABOUT THIS FORECAST

 
Point Forecast:
Ontario CA
 34.05°N 117.61°W (Elev. 902 ft)
2:05 am PDT Aug 20, 2025
7am PDT Aug 20, 2025-6pm PDT Aug 26, 2025
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database